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Every evening from mid-August to mid-October, thousands of Vaux's swifts gather in the sky over the school, then between sunset and dark, fly into a tall brick chimney to roost for the night. Thousands of birds flock in great living tornados, then funnel into the chimney. Estimates of 1,700 to 35,000
369:
Vaux's swift breeds in the mountains and foothills, from southeastern Alaska and
Montana to central California, mainly above 700 m (2,300 ft). It builds a cup nest of twigs and saliva on a vertical surface in a dark cavity, such as a tree hole, cliff crevice or attic. It lays three white
268:
and/or migration requirements. It has a cigar-shaped body, crescentic wings and a short bluntly squared-off tail. The head, upperparts and wings are dusky black, and the underparts, rump and tail coverts are greyish brown. The throat is paler grey, becoming whitish in northern birds. The sexes are
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To protect the swifts, the school stopped using its heating system during the weeks of roosting. Students and teachers wore sweaters and jackets, especially toward the end of
September when classroom temperatures can drop to 50 to 60 °F (10 to 16 °C). Around 2003, the
708:
Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 08 June 2020. A classification of the bird species of South
America. American Ornithological Society.
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swifts have been reported in various years. Shortly after sunset, over a period of roughly 30 minutes, they fly into the top of the brick chimney (constructed c.1925) to roost on the interior surface until they depart at sunrise. The school is on the birds'
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567:, school fundraisers and corporate sponsors donated $ 60,000 to $ 75,000 for an alternate school heating system which is independent of the brick chimney. The chimney is now maintained solely for the use of the birds.
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Because here, not just a few, but up to 30,000 birds swoop down like a tornado at dusk, funneling into this giant chimney. It's the largest concentration of Vaux's Swifts in North
America and a birdwatcher's
333:, especially at weather fronts. It flies with a mixture of stiff wing-beats and unsteady glides. It has more varied calls than others in the genus, with a mixture of chattering, buzzes, squeaks and chips.
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species, at 10.7 to 11.2 cm (4.2 to 4.4 in) long and weighing 18 g (0.63 oz). The northern populations are slightly larger at 11.5 cm (4.5 in), probably according to the
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Vaux's swift builds saucer-shaped nests of twigs or spruce and pine needles stuck to an inside surface of a hollow tree or chimney, between 20 inches and 6 feet from the bottom of the cavity.
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of Brazil, Columbia, Ecuador and other nations in South
America; who are a different species entirely. The Portland Oregon flock is North America's largest concentration of Vaux's swifts.
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502:. They are locally and regionally known as "Chapman swifts" in part because packing thousands of birds into a brick chimney each evening, is a visual treat that draws large crowds.
321:. Preferred habitats include old growth coniferous or deciduous forests consisting of coniferous and deciduous vegetation; requires large, hollow trees for nesting.
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670:
Chesser, R.T.; Vaseghi, H.; Hosner, P.A.; Bergner, L.M.; Cortes-Rodriguez, N.; Welch, A.J.; Collins, C.T. (2018). "Molecular systematics of swifts of the genus
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The birds began using the site in the early 1980s in response to the loss of much of their natural roosting habitat — old growth
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A migratory population of Vaux's swifts roost each Autumn in the old brick chimney of
Chapman Elementary School in Northwest
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breeding range. The resident breeding birds in the southern part of the range are sometimes considered a separate species,
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This is a gregarious species, with flocks of 30 or more birds, and often with other swift species, such as
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similar, but juveniles have dusky bases to the throat feathers.
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of eastern
Venezuela was recognised as a distinct species, the
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eggs between March and July. It spends winters in the tropics.
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The
Documentary Film about Portland's Chapman Swifts—Synopsis"
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The
Audubon Society Encyclopedia of North American Birds
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474:, by the South American Classification Committee of the
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Gill, F.; Donsker, D.; Rasmussen, P. (January 2021).
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10.2305/IUCN.UK.2020-3.RLTS.T154632189A181590271.en
711:http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm
309:, wintering from central Mexico south through the
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836:"Swifts Leave Chapman School Chimney in October"
478:(AOS) in June 2020 and the IOC in January 2021.
413:: Yucatán Peninsula and Cozumel Island (Mexico).
490:Vaux's swifts at Chapman Elementary in Portland
277:Vaux's swift breeds in highlands from southern
1349:Native birds of the Northwestern United States
260:This is a small swift, even compared to other
505:These birds should not be confused with the
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1354:Birds of the Sierra Nevada (United States)
757:. Audubon Society of Portland. August 2010
248:. It was named for the American scientist
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634:. New York: Alfred A. Knopf. p. 870.
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1384:Birds of the Trans-Mexican Volcanic Belt
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1404:Tourist attractions in Portland, Oregon
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531:The swifts attract predators, such as
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676:Molecular Phylogenetics and Evolution
520:to their wintering sites in southern
462:: Western Canada to southwestern USA.
392:International Ornithological Congress
1369:Birds of the Sierra Madre Occidental
768:
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341:The swift feeds in flight on flying
1339:IUCN Red List least concern species
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595:IUCN Red List of Threatened Species
482:Swifts at Chapman Elementary School
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1374:Birds of the Sierra Madre Oriental
913:A Guide to the Birds of Costa Rica
723:Jessica Martin (producer) (2000).
14:
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1379:Birds of the Sierra Madre del Sur
925:
1414:Taxa named by John Kirk Townsend
435:: Southern Mexico to Costa Rica.
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584:BirdLife International (2020).
476:American Ornithological Society
1389:Birds of the Yucatán Peninsula
1359:Native birds of Western Canada
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726:Oregon Field Guide: Vaux Swift
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650:"IOC World Bird List (v 11.1)"
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1:
781:. Audubon Society of Portland
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381:
934:at VIREO (Drexel University)
448:Chaetura vauxi tamaulipensis
402:(Wetmore & Phelps, 1956)
324:
7:
779:"Living with Vaux's Swifts"
688:10.1016/j.ympev.2018.07.006
565:Audubon Society of Portland
364:
10:
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1167:vauxs-swift-chaetura-vauxi
932:Vaux's swift photo gallery
602:: e.T154632189A181590271.
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373:
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938:Interactive range map of
417:Chaetura vauxi ochropygia
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75:Scientific classification
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23:
1394:Birds of Central America
1315:45.533213°N 122.705913°W
956:Internet Bird Collection
884:Chantler and Driessens,
855:OFG: Vaux Swift, 0:05:25
838:. Hollywood Pet Hospital
822:OFG: Vaux Swift, 0:04:30
630:Terres, John K. (1980).
426:Chaetura vauxi richmondi
273:Distribution and habitat
38:In flight in Costa Rica
1409:Birds described in 1839
713:retrieved June 10, 2020
1320:45.533213; -122.705913
491:
466:The former subspecies
460:(J. K. Townsend, 1839)
439:Chaetura vauxi warneri
408:Chaetura vauxi gaumeri
399:Chaetura vauxi aphanes
390:are recognized by the
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468:Chaetura vauxi andrei
442:(A.R. Phillips, 1966)
404:: Northern Venezuela.
951:"Vaux's swift media"
868:. Backyard Bird Shop
457:Chaetura vauxi vauxi
386:The following seven
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911:Stiles and Skutch,
250:William Sansom Vaux
45:Conservation status
1399:Birds of Venezuela
945:IUCN Red List maps
899:Birds of Venezuela
492:
394:as of early 2021:
319:Chaetura richmondi
315:dusky-backed swift
305:' populations are
285:and from southern
1294:
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1266:Open Tree of Life
970:Taxon identifiers
537:Peregrine falcons
472:ashy-tailed swift
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453:: Eastern Mexico.
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422:: Eastern Panama.
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291:Yucatán Peninsula
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1033:Chaetura_vauxi
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978:Chaetura vauxi
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926:External links
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866:"Vaux's Swift"
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188:Binomial name
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60:Least Concern
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24:Vaux's swift
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870:. Retrieved
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840:. Retrieved
818:
807:. Retrieved
802:On The Wing:
801:
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759:. Retrieved
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731:. Retrieved
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557:forest snags
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224:Vaux's swift
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18:
1318: /
1306:122°42′21″W
1253:Neotropical
1227:NatureServe
1175:iNaturalist
1154:vauxs-swift
1002:Wikispecies
682:: 162–171.
655:January 14,
615:19 November
553:Douglas-fir
357:and flying
281:to central
256:Description
145:Apodiformes
1333:Categories
1303:45°32′00″N
1279:Xeno-canto
872:2011-03-31
842:2011-03-30
809:2011-03-30
785:2011-03-30
761:2011-03-30
733:2011-03-30
571:References
388:subspecies
382:Subspecies
283:California
236:native to
1219:154632189
739:paradise.
526:Venezuela
515:migratory
325:Behaviour
307:migratory
299:Venezuela
173:Species:
135:Strisores
98:Kingdom:
92:Eukaryota
1344:Chaetura
1232:2.101463
1193:10195256
1059:22733935
1054:BirdLife
993:Q1262078
987:Wikidata
696:30017823
672:Chaetura
496:Portland
365:Breeding
355:termites
262:Chaetura
205:Townsend
166:Chaetura
155:Apodidae
151:Family:
112:Chordata
108:Phylum:
102:Animalia
88:Domain:
65:IUCN 3.1
1144:5228612
1041:Avibase
897:Hilty,
547:History
433:, 1910)
431:Ridgway
374:Nesting
347:beetles
343:insects
337:Feeding
207:, 1839)
161:Genus:
141:Order:
118:Class:
63: (
1271:174363
1258:vauswi
1206:178002
1151:GNAB:
1126:EURING
1115:ECOS:
1108:vauswi
1082:vauswi
1021:vauswi
918:
905:
891:
886:Swifts
755:"FAQs"
694:
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