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Bcna.org

Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Preserve
Bird banding report - Spring 2000
Although nets had been set up two weeks earlier (when severe winds destroyed one 12M net), banding didn't beginuntil May 1st. Many area birders were reporting low numbers of birds; and, ACNP was not an exception. It wastoo quiet. Our first effort of the spring season produced only one new bird, a Orange-crowned Warbler, and apreviously banded resident Black-capped Chickadee. Not a promising start.
In spite of our diligence, only 198 birds of 44 different species were captured and banded. Our lowest count sincebeginning in the spring of 1991. The busiest day was May 19th with 27 birds of 16 different species. Then, after19 rather unproductive days, the banding equipment was put away on June 5th.
However, as usual, there were a few exciting moments! Two, new for the gulch, species were banded. MagnoliaWarbler and Northern Parula. And, a Northern Mockingbird was added to the sight list. These surprising, but notunexpected, avian guests raised the species totals to 110 banded and 112 captured. The grand total of birdsrecorded by the banding team, since spring of 1991, now stands at 178. How important is the gulch? When you read the newly revised summary and sight list, you will notice a grand total of "186". Is there adiscrepancy? Not exactly. More historic records are being uncovered and reviewed. So, when pre-1991 sightingsare added to the list (species that have been underscored), the known historic total count increases respectively.
Which brings us to another interesting note. The National Bird Banding Laboratory has accummulated all of
Allegra Collister's banding records for Colorado. Would you believe 52,362? We are not sure of the earliest
dates. Of course, not all of the records are for ACNP. Allegra spent a great deal of time banding birds in Rocky
Mountain National Park, and at other sites too. The new challenge is to get all the data sorted out . . . . . . . .
someday. It will be interesting. What will it reveal? Hopefully, it won't be extremely difficult and we can have a
lot of fun in the process.
The horse ranch to the south of ACNP has been sold and the new owners have taken possession. Our drivewayparking privileges have not been revoked. We hope to continue a good neighbor relationship.
Just a reminder, the amended ACNP access protocol is in effect. Any questions, or concerns, may be addressed toa site custodian or the President of BCNA. Your comment is welcome.
Its time to start planning the fall season. Will we see the 7,000th bird banded? Will we add more species? Willthe total count (including historic records) exceed 200? We are very eager to get started again. Would mid Augustbe too soon? Both of the complementary studies at ACNP are continuing. The vegetation study is producing some wonderfulresults and will probably be ongoing for another season, or more. And, our expert entomologist finds and collectsmore and more of the insects that appear on the avian diners menu.
Anyone who desires a printed copy of the current banding summary and list of bird species sighted should contactJoe Harrison at 303-772-3481 or E-mail to avianchase@aol.com. If you would like additional information, or haveunanswered questions, don't hesitate to ask.
Virginia Dionigi Tony Esposito Joe Harrison Maggie Boswell Tom Delaney Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Area
Bird Banding Summary - Spring 1991 through Spring 2000
Species &

1996 1996 1997 1997 1998 1998 1999 1999 2000 2000 TOTAL Subspecies
1. Sharp-shinned Hawk Accipiter striatus 2. Cooper's Hawk Accipiter cooperii 3. Broad-winged Hawk Buteo platypterus 4. American Kestrel Falco sparverius 5. Mourning Dove Zenaida macroura 6. Yellow-billed Cuckoo Coccyzus americanus 8. Red-naped Sapsucker Sphyrapicus nuchalis 9. Downy Woodpecker Picoides pubescens 10. Hairy Woodpecker Picoides villosus 11. Red-shafted Flicker Colaptes auratus 12. Olive-sided Flycatcher Contopus borealis 13. Western Wood Peewee Contopus sordiulus 14. Eastern Wood Peewee Contopus virens 15. Alder Flycatcher Empidonax alnorum 16. Willow Flycatcher Empidonax traillii 17. Least Flycatcher Empidonax minimus 18. Hammond's Flycatcher Empidonax hammondii 19. Dusky Flycatcher Empidonax oberholseri 20. Gray Flycatcher Empidonax wrightii 21. Cordilleran Flycatcher Empidonax occidentalis 22. Eastern Kingbird Tyrannus tyrannus 24. Steller's Jay Cyanocitta stelleri Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Area
Bird Banding Summary - Spring 1991 through Spring 2000
Species &

1996 1996 1997 1997 1998 1998 1999 1999 2000 2000 TOTAL Subspecies
26. Black-billed Magpie Pica pica 27. Black-capped Chickadee Parus atricapillus 28. Mountain Chickadee Parus gambeli 29. Red-breasted Nuthatch Sitta canadensis 30. White-breasted Nuthatch Sitta carolinensis 31. Pygmy Nutchatch Sitta pygmaea 32. Brown Creeper Certhia americana 33. Rock Wren Salpinctes obsoletus 35. Golden-crowned Kinglet Regulus satrapa 36. Ruby-crowned Kinglet Regulus calendula 37. Blue-gray Gnatcatcher Polioptila caerulea 38. Townsend's Solitaire Myadestes townsendi 40. Swainson's Thrush Catharus ustulatus 41. Hermit Thrush Catharus guttatus 42. American Robin Turdus migratorius 43. Gray Catbird Dumetella carolinensis 44. Sage Thrasher Oreoscoptes montanus 45. Brown Thrasher Toxostoma rufum 46. Cedar Waxwing Bombycilla cedrorum 47. Northern Shrike Lanius excubitor 48. European Starling Sturnus vulgaris 49. Plumbeous Vireo Vireo plumbeous Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Area
Bird Banding Summary - Spring 1991 through Spring 2000
Species &

1996 1996 1997 1997 1998 1998 1999 1999 2000 2000 TOTAL Subspecies
51. Red-eyed Vireo Vireo olivaceu s 52. Tennessee Warbler Vermivora celata 53. Orange-crowned Warbler Vermivora peregrina 54. Nashville Warbler Vermivora ruficapilla 55. Virginia's Warbler Vermivora virginiae 56. Northern Parula Parula americana
57. Yellow Warbler Dendroica petechia 58. Chestnut-sided Warbler Dendroica pensylvanica 59. Magnolia Warbler Dendroica magnolia
60. Black-throated Blue Warbler Dendroica caerulescens 61. Yellow-rumped Warbler Dendroica coronata 62. Black-throated Gray Warbler Dendroica nigrescens 63. Townsend's Warbler Dendroica townsendi 64. Blackpoll Warbler Dendroica striata 65. Black-and-White Warbler Mniotilta varia 66. American Redstart Setophaga ruticilla 67. Worm-eating Warbler Helmitheros vermivorus 68. Ovenbird Seiurus aurocapillus 69. Northern Waterthrush Seiurus noveboracensis 70. Mourning Warbler Oporornis philadelphia 71. MacGillivray's Warbler Oporornis tolmiei 72. Common Yellowthroat Geothlypis trichas Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Area
Bird Banding Summary - Spring 1991 through Spring 2000
Species &

1996 1996 1997 1997 1998 1998 1999 1999 2000 2000 TOTAL Subspecies
73. Wilson's Warbler Wilsonia pusilla 74. Yellow-breasted Chat Icteria virens 76. Western Tanager Piranga ludoviciana 77. Rose-breasted Grosbeak Pheucticus ludovicianus 78. Black-headed Grosbeak Pheucticus melanocephalus 79. Blue Grosbeak Guiraca caerulea 80. Lazuli Bunting Passerina amoena 81. Indigo Bunting Passerina cyanea 82. Green-tailed Towhee Pipilo chlorurus 83. Spotted Towhee Pipilo maculatus 84. American Tree Sparrow Spizella arborea 85. Chipping Sparrow Spizella passerina 86. Clay-colored Sparrow Spizella pallida 87. Brewer's Sparrow Spizella breweri 88 Field Sparrow Spizella pusilla 89. Vesper Sparrow Pooecetes gramineus 90. Lark Sparrow Chondestes grammacus 91. Lark Bunting Calamospiza melanocorys 92. Savannah Sparrow Passerculus sandwichensis 93. Fox Sparrow Passerella illaca 94. Song Sparrow Melospiza melodia 95. Lincoln's Sparrow Melospiza lincolnii 96. Swamp Sparrow Melospiza georgiana 97. White-throated Sparrow Zonotrichia albicollis Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Area
Bird Banding Summary - Spring 1991 through Spring 2000
Species &

1996 1996 1997 1997 1998 1998 1999 1999 3000 2000 TOTAL Subspecies
98. White-crowned Sparrow Zonotrichia leucophrys 99. Dark-eyed Junco Junco hyemalis 100. Red-winged Blackbird Agelaius phoeniceus 101. Western Meadowlark Sturnella neglecta 102. Common Grackle Quiscalus quiscula 103. Brown-headed Cowbird Molothrus ater 104. Orchard Oriole Icterus spurlus 105. Bullock's Oriole Icterus bullockii 106. House Finch Carpodacus mexicanus 107. Pine Siskin Carduelis tristis 108. Lesser Goldfinch Carduelis psaltria 109. American Goldfinch Carduelis tristis 110. House Sparrow Passer domesticus Individuals banded
1433 1759 446 624 497 237 259 488 206 396 198
es banded
Captured - not banded [ ]*111. Broad-tailed Hummingbird Selasphorus platycercus 112. Rufous Hummingbird Selasphorus rufus Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Preserve
Sight List - Spring 1991 through Spring 2000 *
Boulder County Nature Association
Colorado Bird Observatory
Allegra Collister Nature Preserve
Sight List - Spring 1991 through Spring 2000 *
170. Northern Mockingbird

Source: http://www.bcna.org/library/bandsum.pdf

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