Archive for the ‘Birds’ Category

2008 Mad Island CBC

Saturday, February 7th, 2009

MATAGORDA COUNTY – MAD ISLAND MARSH

CHRISTMAS BIRD COUNT

15 December 2008

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The 16th running of the Matagorda County – Mad Island Marsh Christmas Bird Count felt more like a survival adventure than a bird survey.  Most of our Team had no idea of the timing and strength of the “Blue Norther” that was going to hit us during the morning of the CBC.  Weather forecast the night before indicated heavy fog in the morning and a cold front arriving in the afternoon, but the front that arrived was much stronger and faster than predicted.

Our team of 97 dedicated birders reported 233 species of birds which will make us Number One in the Nation again for species.  Guadalupe River Delta – McFaddin Family Ranches placed 2nd with 217 species.

 

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The scene above greeted many of our teams at first light.  A heavy fog had settled along the Coast and some birders had a hard time seeing the roads on which they were driving.  Gradually the fog lifted and birds became active.  It was actually pretty nice for about an hour with relatively light winds and low clouds.  Then about 9 a.m. we observed a very dark frontal line to the north and we knew we were going to experience some pretty serious weather.  Birders scurried for their vehicles, birds headed for cover, and the two boats with birders in the bay had to deal with it.  Our East Bay boat (James Arnold’s) decided to head for the harbor.  We drove about 7 miles through 30 mph north winds, light rain and a drop of 30 degrees in temperature as we got out of the bay.  The airboat in West Bay just decided to work through it.

This was one of the few CBCs I have attended that I felt the need to call birders to see if anybody was still out there.  After taking a break at the harbor, finding some warmer gear and determining that the Count was still active, we continued our journey.  It actually was not uncomfortable on the water once the rain stopped and we wore better gear.  The wind made all birding challenging and the 97 birders did what we could on land and water.

BEST BIRD

 

Our section leaders voted the E. Wood-Pewee as the Best Bird which barely beat out the Black-headed Grosbeak.

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We had a nice collection of rare bird sightings and they will be discussed below:

The FULVOUS WHISTLING-DUCK has been reported 5 times during the CBC and is expected, but can be very difficult to find as they tend to hide in densely vegetated freshwater marshes.  The Serrill family managed to locate one at Mad Island as it was flying with Black-bellieds.

WOOD STORKS are common during sumer/fall in the area and occasionally one will linger.  Jan Huebner found one on the Baer Ranch.  This marked the 3rd time we have had one on the CBC.

The APLOMADO FALCON is probably this CBC’s Best Bird year-in and year-out.  Two were reported by Jared Laing and Heather Serrill.  Heather is always looking for a photo opportunity and managed to get this nice shot of one on TNC.

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PURPLE GALLINULE is another resident of the deep marsh that typically migrates south for the winter.  Our team can occasionally find one lurking if they work the tall marsh vegetation.  This year Jared Laing managed to sling a rock near one making it flush in the Mad Island area, and it became our 4th CBC record.

We posted our highest tally of FRANKLIN’S GULLS with 8 this year.  They seemed to be everywhere with 5 of the 15 sections reporting them.

LESSER BLACK-BACKED GULL was the only new species for the count this year.  A number of this species were reported along the Coast this season and it’s presence was expected, but it required a very knowledgeable birder to identify it.  Thus, I was excited when Petra Hockey said she was going to do a “Sea Watch” during the count and she came through with this species and a couple more exclusives.

Mad Island is known for its high diversity of flycatchers.  The E. WOOD-PEWEE reported this year is the CBCs 4th record.  All EAWP have been identified by vocalization.  This individual discovered by “Mr. Radar” Mark Scheuerman was also seen and described well, and eventually photographed.  That is not its photo above, but one I caught during an earlier trip.

Martine Got well described an E. KINGBIRD on TNC for our 4th record, and Jean Martin’s River Section reported 2 GREAT KISKADEES which was also our 4th record. 

The WOOD THRUSH used to be a species I doubted occurred with any regularity.  Our Team has been successful at locating and occasionally photographing Wood Thrushes 9 times.  This year one was well described by Michael Kennedy at the Lyondell-Basell property.

The TENNESSEE WARBLER is still one of those lingering warblers that I am yet to identify in winter.  This year makes the 7th time our Team has adequately described one.  Sandy Dillard and 4 other observers reported one in the Peninsula Section.

YELLOW WARBLER is an expected lingering neotrop that can be difficult to find.  Two were located prior to the CBC and it took Brad Lirette lots of work to photograph the one below during the heavy winds of the day in the W. Roads Section.

 

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This seems to be the year for BLACK-HEADED GROSBEAKS.  I have had one at my Victoria County home this fall and I have heard of several reports on the Coast.  Dale Friedrichs described one well during this CBC on the Lyondell-Basell property for our 3rd record.

RESULTS

 

Excel spreadsheet with data by section available upon request.

 

233 species is an amazing total for the Weather in which we had to conduct the bird count.  We missed a number of regular species like Ferruginous Hawk, Solitary Sandpiper, E. Screech-Owl, Rufous Hummingbird, Say’s Phoebe, Black-and-White Warbler, Ovenbird, N. Waterthrush, Clay-colored Sparrow, Painted Bunting and House Finch.  We also missed Groove-billed Anis which were spotted the day before and observed still there in mid January. 

The Wildlife Management Area section had the most species with 157.  Matagorda-East, Lyondell, W. Roads, TNC and the Rovers had 4 or more exclusives.

We have led the Nation for 10 years with the most highest counts of individual species.  We normally get at least 20 high tallies.  We might not be able to do it this year.  Candidates for highest counts are the 3002 Am. White Pelican, 1201 Great Egret, 984 Roseate Spoonbill, 41 White-tailed Hawk, 216 Crested Caracara, 20 Yellow Rail, 112 Piping Plover, 289 Greater Yellowlegs, 116 Spotted Sandpiper, 1 E. Wood-Pewee, 477 Sedge Wren, 1 Wood Thrush, 44 Sprague’s Pipit, 1 Black-headed Grosbeak, 23,459 Boat-tailed Grackle, 1226 E. Meadowlark.

TRENDS

Weather is the Great Equalizer in CBC competition and it almost got us on our species tally.  It did greatly reduce tallies of birds and it will be difficult to determine if changes in numbers were more “weather of the day” affected or impacted by the extreme drought which is occurring in many parts of Texas.  Aside from the 12 species missed, 55 species had low counts and 45 had high counts.  Last year we had 65 species with high counts and 25 species with lows:  A Big Difference.

HIGH COUNTS:  Am. Wigeon, Blue-winged Teal, N. Shoveler, N. Pintail, Redhead, Ring-necked Duck, Hooded Merganser, Green Heron, Roseate Spoonbill, Black Vulture, Turkey Vulture, Bald Eagle, Sharp-shinned Hawk, Crested Caracara, Aplomado Falcon, Peregrine Falcon, Yellow Rail, Purple Gallinule, Sandhill Crane, Snowy Plover, Semipalmated Plover, Piping Plover, Spotted Sandpiper, Ruddy Turnstone, Least Sandpiper, Short-billed Dowitcher, Wilson’s Snipe, Franklin’s Gull, Lesser Black-backed Gull, Royal Tern, Eur. Collared-Dove, Burrowing Owl, Great Kiskadee, E. Kingbird, N. Rough-winged Swallow, Barn Swallow, Winter Wren, Sedge Wren, Am. Pipit, Tennessee Warbler, Yellow Warbler, Lark Sparrow, Am. Goldfinch, House Sparrow.

LOW COUNTS:  Ross’s Goose, Cackling Goose, Canada Goose, Wood Duck, Mottled Duck, Canvasback, Surf Scoter, N. Bobwhite, Horned Grebe, Eared Grebe, Tricolored Heron, Cattle Egret, Yellow-crowned Night-Heron, Osprey, Am. Kestrel, Merlin, Clapper Rail, Am. Oystercatcher, Long-billed Curlew, Red Knot, Bonaparte’s Gull, Ring-billed Gull, Gull-billed Tern, Common Tern, Forster’s Tern, Inca Dove, Short-eared Owl, Buff-bellied Hummingbird, Black-chinned Hummingbird, Ruby-throated Hummingbird, Belted Kingfisher, Yellow-bellied Sapsucker, Ladder-backed Woodpecker, Downy Woodpecker, Yellow-shafted Flicker, E. Phoebe, Ash-throated Flycatcher, Couch’s Kingbird, Loggerhead Shrike, Blue Jay, Horned Lark, Tufted Titmouse, Brown Creeper, E. Bluebird, N. Mockingbird, Chipping Sparrow, Savannah Sparrow, Grasshopper Sparrow, Le Conte’s Sparrow, Nelson’s Sharp-tailed Sparrow, Song Sparrow, Swamp Sparrow, White-throated Sparrow, N. Cardinal, Red-winged Blackbird.

Waterfowl = 7 species high and 8 low out of 28 species.  The Mad Island Area was fortunate to receive an 8 inch rain in November which filled most impoundments and natural wetlands.  Otherwise it would have been very dry and with much fewer water birds.

Divers = 2 low out of 5 species.  Wave action made it difficult to get good counts.

Pelicans through Ibises = 2 high, and 3 low out of 23 species.  We were able to make decent counts on most large waterbirds despite the weather because birds were concentrated in areas accessible to our Team.

Raptors = 7 high and 3 low out of 18 species.  Very good numbers.  Increasing catfish ponds in the W. Roads Section are attracting large numbers of vultures and Caracaras.  Major emphasis of ag landholders to manage for waterfowl also build up a major food source for large raptors and the numerous blackbirds continue to feed many hawks and owls.

Shorebirds = 8 highs and 3 low out of 26 species.  One of the most exciting parts of the CBC for me is to visit the Colorado River Delta during a falling tide.  Extreme low tides exposes hundreds of acres of mudflats and shorebirds from throughout the County flock to the Delta during these situations.  This year the timing of the front was a little late to have maximum exposure, but we were able to observe some very good numbers of birds on the mudflats.

Gull & Terns = 4 highs and 5 lows.  Strong winds definitely made Gulf observations challenging and tended to force most birds to roosts.

Doves thru Woodpeckers = 2 high and 12 low.  Canopy birds were difficult to locate in the wind and many low numbers reflected this.  Despite the weather this was our best year for locating Burrowing Owls with 5 being reported.

Flycatchers thru Pipits = 7 highs and 10 lows.  The few highs reported were associated with wetlands and lingering neotrops.

Warblers.  We only had 11 species of warblers.  This was the lowest tally of warbler species for the CBC during the decade.

Sparrows thru Blackbirds = 3 highs and 10 lows.  Too much wind to determine what we had.

TEAM WORK

Special thanks to: Marc Ealy, David Sarkozi, James Arnold, Melissa Gaskill for working the bays in boats all day in the weather;  Jim Hargrove, Charlie Brower, Sumita Prasad, Karen McBride, Ural and Terry Donohoe, Jerry McIntyre, Michael Kennedy, Bill Baker, Cathy Porter, Brad Lirette, Jean Martin, Bron Rorex, Jim Renfro and Marc Ealy for being Section Leaders; Peregrine Fund for providing us the falcon photo for the T-shirt; Shawn Ashbaugh for developing the design of the T-shirt.

 

 

This Christmas Bird Count is The Number One in the Nation from our Team’s perspective.  It has shown national leadership in cooperative efforts between the birders, the landowners, the boat operators and the people of Matagorda County.  It takes every bodies efforts focused on the end result to achieve our goals.  Yes, we have a very diverse avifauna that is the product of a narrow forested corridor extending all of the way down the Colorado River to the Gulf that is bordered by an abundance of native prairies, brushlands and wetlands. An added factor is geography creates diverse ecosystems being in close proximity.  This diversity would not be possible unless the landowners managed their land to maintain the productivity of the habitats, and it would not be possible to survey them unless they liked our project and permitted us access.  All the birds in the world would not mean anything unless the interest, skills and cooperation of the Texas birders would not show up to conduct the count.  We would count very few water birds unless our boat operators would not donate a day from their busy schedule as well as the use of their boats.  We get great support from Texas Parks and Wildlife Department, The The Nature Conservancy, the South Texas Nuclear Project and Lyondell-Basel for use of equipment, land and staff.  Lastly, we could not afford to pay for the Great Supper at the Wadsworth Community Center, provide counters with t-shirts and pay their CBC activity fees without the generosity of the sponsors.

LEADERS:  David and Marilyn Sitz.  David has developed a great relationship with the landowners of Matagorda County and he is the person who obtains permission for the birders to access the private property.  Marilyn does the fund raising, arranges for the production of T-shirts and the catering at the banquet.  She recruits volunteers to work at the banquet.  This count would not be near as special without the leadership of Marilyn and her volunteers. 

SPONSORS: Bay City Convention Bureau, Matagorda County Birding & Nature Center, Texas Parks & Wildlife Dept., Lower Colorado River Authority, The Nature Conservancy, South Texas Nuclear Project Operating Co., Lyondell-Basel, Celanese, Wells Fargo Bank, All Star Real Estate, City of Bay City.

LANDOWNERS:  Lower Colorado River Authority, George Harrison, PCS Phosphate, Inc., Jack Miller, Carl Anderson family, Charlie Brower’s family, Roy Poinsett, Eugene Welfel, Baer Ranch, Lyondell-Basel, South Texas Project Nuclear Operating Company, Julius Ledwig, Linda Joy Stovall, Bill Von Gonten, Smith Marsh, The Nature Conservancy of Texas, Texas Parks and Wildlife Department, Grover Ryman, Bill Doss, Ray Culver, Becca Sitz and John Jureczki.

BOAT OPERATORS:  We appreciate the services and the boats provided by James Arnold, and the Texas Parks & Wildlife Department.

NEXT YEAR

This was another amazing CBC at Mad Island.  We thank all of you who helped.  Next year will be better.  We promise it!  Come join us to check it out and bring a friend on Monday, 14 December 2009.

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2008 Dobie Ranch Banding

Monday, October 27th, 2008

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Claudia Dorn, Jerry Gips, Jimmy Jackson, Brent Ortego and Bron Rorex mist-netted birds at the Dobie Ranch in Live Oak County from 24-26 October 2008. This is the 4th year in a row mist-netting has been used to survey the avifauna of this ranch in late October. Weather was very nice with nights dropping into the low 50′s and highs in the 80′s with relatively light winds. 28 species and 246 birds were captured and are both records for the ranch.

2007 was a fairly wet year leading into a very dry 2008 making for a fairly dense, but dry herbaceous community. 5 water features provided by the landowner has made a major positive difference in the abundance of select species (GKIS, GREJ & NOCA) on the ranch to thrive in drought conditions.

Red-shouldered Hawk, Ladder-backed Woodpecker, Black-and-White Warbler and White-crowned Sparrow were new species banded on the ranch. Neither of these are surprising captures, but are just hard to catch at this site.

Com. Ground-Dove, Golden-fronted Woodpecker, Great Kiskadee, Green Jay, N. Mockingbird, Long-billed Thrasher, Orange-crowned Warbler, N. Cardinal, Pyrrhuloxia and Audubon’s Oriole were call caught at well above average rates.

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A list of species captured are provided below:

MIST-NET HOURS 430 420 571 829 684
SPECIES 10/05 3/06 10/06 10/07 10/8
SSHA 0 0 2 0 0
COHA 0 1 0 0 0
RSHA 0 0 0 0 1
NOBO 0 0 0 2 unbanded
MODO 0 1 1 1 0
COGD 0 2 43 1 16
WTDO 0 0 0 2 0
EASO 1 0 0 0 0
PAUR 0 1 0 1 1
WPWI 0 0 1 0 0
RTHU 0 0 0 1 0
GFWO 4 5 0 5 11
LBWO 0 0 0 0 1
EAPH 3 1 9 2 5
GKIS 2 3 0 0 8
WEVI 5 2 11 15 6
GREJ 14 5 10 13 30
CARW 2 2 1 2 0
BEWR 2 2 6 12 3
HOWR 0 0 6 3 0
WIWR 0 0 1 0 0
BCTI 1 4 5 6 10
GCKI 0 0 2 0 0
RCKI 6 3 7 1 4
BGGN 0 3 1 2 1
VERD 3 0 2 2 1
HETH 1 1 12 0 2
GRCA 0 0 1 0 1
NOMO 10 35 4 10 19
BRTH 1 0 0 0 0
LBTH 2 1 8 13 19
NAWA 0 0 5 1 1
OCWA 3 0 7 1 11
BAWW 0 0 0 0 2
HOWA 0 1 0 0 0
OLSP 2 0 1 19 5
SPTO 0 0 1 0 0
FISP 0 1 0 0 0
LASP 0 2 0 1 3
LISP 3 1 6 9 1
WCSP 0 0 0 0 1
NOCA 10 51 34 46 71
PYRR 3 0 2 8 8
PABU 0 0 0 1 0
INBU 0 0 0 1 0
AUOR 1 0 0 0 3
SPECIES 21 22 27 28 28
TOTAL 79 128 189 177 246

In addition to individuals captured, a number of additional species were observed on the ranch that were potentially available for capture:

Wild Turkey Mourning Dove
N. Bobwhite White-tipped Dove
Turkey Vulture Greater Roadrunner
Sharp-shinned Hawk E. Screech-Owl
Cooper’s Hawk Great Horned Owl
Harris’s Hawk Barred Owl
Red-tailed Hawk Scissor-tailed Flycatcher
Crested Caracara Meadowlark sp.
Am Kestrel

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Brent Ortego

The Texas Bird Banding Team

2008 FALL BANDING

Tuesday, October 21st, 2008

2008 FALL BANDING

At Ortego – Zalk

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We had a busy fall at the banding station in Victoria County.  Weather was generally dry and warmer than normal.  Hurricanes threatened the area twice to the north and once from the south.  We were fortunate those major storms missed us, but weather patterns were extremely dry.

Feeder birds occurred in numbers above average because of dry conditions, but my hernia surgery at the peak of Ruby-throat migration in mid September caused capture of much lower numbers of this species than expected.

We caught much higher numbers of Red-eyed Vireos and Empids than previous years.  Many of these individuals were concentrating on fruits of swamp dogwood at the station.

Western hummingbirds only showed up in light numbers.  We had two Rufous and 1 Allen’s from past years show up in August.  We were also delighted with the capture of a Calliope.  The Calliope migration to the area varies from year to year.  Most years they seem to not stray south of I-10 and we miss out seeing these tiny birds.  In other years we will get several to over-winter.  This Calliope arrived at an early August date and did not stay.  This was not surprising since most western hummers arriving early are still searching for their perceived winter ground.

We had a nice surprise when a young Allen’s I banded on 9/30/8 was captured by banding team member Charlie Brower at his home on 10/6/8.  The rest of the Team had a variety of foreign recaptures of Ruby-throated Hummingbirds this fall.  Jim Renfro banding in Houston County caught birds originally banded in Illinoies and Missouri.  Bron Rorex banding in Rockport caught a bird originally banded in North Carolina 10 days earlier, and we received a report of a banded bird found by a home owner near Sugarland that was originally banded at LeCompte, LA.

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I would like to thank Sue Ortego, Bron Rorex and Susan Beree for assistance with the banding this Fall.

TOTAL BANDED = 1928 with 919 RECAPTURE EVENTS

INDO              3

YBCU             1

BUFH              95

RTHU              1370

BCHU             15

RUHU             4

ALHU              2

CAHU             1

YBFL              6

ACFL              1

WIFL               4

ALFL               35

TRFL               81

LEFL               7

EAPH              2

GCFL              2

WEVI              24

REVI               13

WAVI              1

BHVI               1

CARW            6

HOWR            12

ETTI                0

CACH             8

RCKI               1

BGGN             4

HETH              1

GRCA             3

NOMO            3

LBTH              3

NAWA            23

OCWA            2

YWAR            4

BAWW           1

MOWA           10

HOWA            1

WIWA             31

CAWA            1

COYE             7

YBCH             28

SUTA              3

CHSP              1

LISP                8

NOCA             70

BLGR              1

INBU               16

PABU              7

OROR             3

BAOR             2

2008 Hummer House Trip

Monday, July 7th, 2008

2008 Hummer House Trip

19-23 June

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Sue and I left Victoria at 3:30 a.m to meet Ann Lemon at her ranch near Segovia to sample her hummers. We enjoyed visiting with Ann and catching Black-chins with a hill top view. Many Painted Buntings and other seed eaters visited her grain feeders while we worked the hummers. Our sample goal was 100 which we achieved by 10 a.m. Her population appeared to have slowed down in breeding for the season because only 26 of 57 adults were male. The normal sex ratio is 1:1 and males tend to leave when they do not get enough attention. 67% of adult females showed tail wear indicating they probably fed young and 17% of our sample was comprised of young birds. 13 of the adults captured had been banded during previous trips. We ate a nice breakfast at one of the best Junction restaurants and watched a waitress balance raw eggs on their ends which is reported as to be only possible during the summer solstice.

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2008 Independence Creek Trip

Monday, July 7th, 2008

INDEPENDENCE CREEK

Chandler Ranch

21 – 23 JUNE 2008

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After banding at Dan & Cathy Brown’s Hummer House on 20 June, Ross Dawkins and I continued our expedition by traveling to the Chandler Ranch in Terrell County. We netted on the south side of Independence Creek near its confluence with the Pecos River. Conditions were hot and very dry. There was still a good clear flow in the creek. We focused netting near the “slab” on the first day having to keep most nets in total shade because of 100+ degree temperatures. The 2nd day, we shifted unproductive nets and all nets near the river westward towards the “shady grove” area. We caught about 300 individuals of 30 species. Yellow-breasted Chat, Painted Bunting, Blue Grosbeak and Bell’s Vireo were the dominant species in the baccharis dominated riparian zone. Black-capped Vireo and Green Kingfisher occurred in relatively high numbers. We caught a Black-capped Vireo that was banded during an earlier study that was at least 8 years old.

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Texas Ornithological Society Abstracts

Friday, November 2nd, 2007

Pasted below are a number of abstracts presented at Texas Ornithological Society Science Sessions.

Texas Ornithological Society

50TH Anniversary

Science Paper Session

26 April 2003

Days Inn, Port Lavaca

BIRD USAGE OF RUNNING LIVEOAK WOODLANDS NEAR THE COAST IN CALHOUN COUNTY, TX

BRENT ORTEGO, Texas Parks and Wildlife Department, Victoria, TX

Abstract: Birds were mist-netted during the spring and fall of 2001 and 2002 in expansive running liveoak (Quercus virginiana) woodlands that were 4 and 10 miles inland from Matagorda Bay and Gulf of Mexico, respectively, in Calhoun County Texas. The woodlands were a mosaic of running liveoak less than 10 feet tall and coastal prairie in a 35,000-acre area that was comprised roughly of 50% of each between Powderhorn Lake and Matagorda Bay.

1200 (12-meter long with 30-mm mesh) mist-net hours were used during the spring and 2500 during the fall of two years to sample resident and migrant birds during March and April, and August through October. Although, roughly the same number of species were captured each season (55 in spring and 58 in fall), the frequency of captures were twice as high in the fall (50 per 100 net-hours vs. 24). Fall neotropical migrants and flycatchers were netted 6 times and warblers 4 times more frequent than spring. The only species group more abundant in spring were neotropical thrushes which were caught at .6 birds per 100 net-hours and non were captured in fall. At the distance of the study area from the Gulf, most spring inland bound migrants needing to make emergency landings probably did so prior to reaching the study area and those more fit migrants flew over the study area before making first land fall. In contrast, fall migrants made frequent use of the woodlands for foraging prior to migrating over or around the Gulf.

Texas Ornithological Society

Science Session

14 April 2005

Weslaco, TX

Impact of a Level 1 Hurricane on nesting Bald Eagles in Texas.

Brent Ortego Texas Parks and Wildlife Department, 2805 N. Navarro, S600B, Victoria, TX 77901; brent.Ortego@tpwd.state.tx.us

Hurricane Claudette passed through Texas coastal counties during July 2003 as a level 1 hurricane. Bald Eagle nesting data from 8 counties that were not impacted by the hurricane were compared to 7 counties that were. Noticeable hurricane impacts were mostly knocking down nests and tall trees that potentially would serve as nests in the future. Eagles in this part of Texas typically replace nests at 4 year intervals. Thus, about 25% of the nests are normally replaced each year. Seven nests in the 7 counties within the path of the hurricane were known to have been destroyed by the storm and all were rebuilt during the following fall when nesting commenced. The 8 adjoining non-impacted counties had 14 nesting attempts fledge 22 eagles before the hurricane in 2003 and 16 nesting attempts and fledge 32 eagles after the hurricane in 2004. The 7 impacted counties had 19 nesting attempts before the hurricane fledge 31 eagles in 2003, and 20 nesting attempts fledge 33 eagles after the hurricane in 2004. Short term lost of nests was the only noted impact.

Texas Breeding Bird Survey

BRENT ORTEGO, Texas Parks and Wildlife Department, Victoria, TX; brent.Ortego@tpwd.state.tx.us

The U. S. Breeding Bird Survey (BBS) is a highly standardized 24.5 mile survey randomly located along public roads throughout Texas, and is used to monitor population trends and estimate densities of breeding birds in Texas by ecoregion. The survey started in Texas in 1967. It was coordinated by Warren Pulich until 1993 and was taken over by me with periodic assistance from co-coordinators.

BBS volunteers work primarily anonymously. They get very little recognition, but produce the data on which many conservation organizations depend. Their common theme is that they love counting birds and are concerned about their status. 417 birders have conducted the 195 BBS routes in Texas since its beginning. Kenneth Seyffert has conducted the most surveys in TX by running BBS routes 149 times. Other noteworthy surveyors are Francis Williams conducting 74, James Middleton 65, Richard Albert 63, Brent Ortego 61, Charles Crabtree, Jr., 59, Peggy Accord & Kenneth Nanney 58, and Andrew O’Neil 54.

The survey tracks 151 species very well state-wide. 24 of these are significantly increasing in numbers and 38 are significantly declining. Greatest rates of significant declines are found in grassland, scrub and woodland habitats, neotropical migrants, and open cup & ground or lower nesters.

Texas Ornithological Society

2006 Science Session

Laredo, TX

White-winged Dove Distribution From a Recently Colonized Town in the Coastal Prairie of Texas

Lyndon Schatz, 608 Blyth, Victoria, TX 77904

Brent Ortego, Texas Parks and Wildlife Department, 2805 N. Navarro, Suite 600B, Victoria, TX 77901

White-winged Doves (Zenaida asiatica) have been expanding their population and range in Texas from the Rio Grande Valley for the last several decades. The largest breeding population containing over 1 million birds is in San Antonio. Aside from larger urban areas being colonized, many smaller more suburban towns have been occupied by white-wings for decades. The population dynamics of these residential populations are not very well understood. The objective of this study was to determine if the white-wings spent the entire year at Victoria, and if there was any difference in survival and distribution of hatch year and adult birds. The senior author opportunistically banded 1796 white-wings from his yard in Victoria during 10 of 11 breeding season from 1995 through 2005. 49 birds were recaptured at the banding station and 44 were harvested by hunters. No foreign recaptures were obtained from this project, but 19 of 44 birds harvested were from distances greater than 50 miles. Six of these were harvested >100 miles and occurred at sites like San Antonio, Mexico, Guatemala and Florida. Adults had a greater tendency to be recaptured/harvested, 8.5% of 520, than young white-wings, 3.8% of 1276; P<.05.

Banding

White-winged Doves were opportunistically banded as they came in to feed at a permanent ground bird feeding station in the north side of Victoria, Texas, from March through September from 1995 thru 2004, with 1996 having no banding. Two standard walk-in traps were used for l hour each banding day from 1995 thru 2000. Starting in 2001, a drop trap (8 X 3 X 1- foot) was fabricated using 1.25-inch PVC pipe for framing and 1.5 inch bar mesh netting for walls, and was used to diversify the trapping methods. Trap shy birds appeared to be more vulnerable to capture by alternating the capture technique. However, birds caught per day did not differ, but number of days when birds were available did.

Texas Ornithological Society

Science Session

San Antonio Airport Hilton

12 April 2007

OVERVIEW OF BANDING IN THE CONSERVATION OF PURPLE MARTINS IN SAN ANTONIO AND SOUTH TEXAS

Louise Chambers, Education Director, Purple Martin Conservation Association, 301 Peninsula Drive, Ste. 6, Erie, PA 16505; louise@purplemartin.org

John Barrow, Purple Martin Banding Coordinator-South Texas, 4146 Congressional Dr., Corpus Christi, TX 78471; barrow@chilitech.com;

Abstract: In eastern North America, Purple Martins (Progne subis) nest almost exclusively in housing provided by people. This dependency, their tractable nature, and their strong fidelity to nesting colonies, make Purple Martins ready subjects for banding based studies. An overview of the study being conducted in San Antonio and South Texas, now in its fifth year, is presented as example of what can be obtained through a concerted banding effort. Emphasis is on general biology and management of Purple Martins, migratory roost development and movement, and inclusion of educational opportunities at the elementary school level. A number of other Canadian and US banders, primarily in northern states, having similar objectives independently band and color-mark Purple Martins. Purple Martin Conservation Association promotes standardization and coordination of data, so that it can be pooled for population monitoring and studies at different geographic scales. Results could be useful in addressing regional declines and population variances of Purple Martins. The situation with Purple Martins in South Texas is presented as an example.

Ortego Birds Intro

Wednesday, May 23rd, 2007

Buff-bellied Hummingbird

This website will cover bird related activities of the Ortego Family living within Texas. Banding activities with The Texas Bird Banding Team, Christmas Bird Counts and Breeding Bird Surveys will make up most of the activities.