Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America?
<p>Abstract</p> <p>Background</p> <p>The apparent rediscovery of the Ivory-billed Woodpecker <it>Campephilus principalis </it>in Arkansas, USA, previously feared extinct, was supported by video evidence of a single bird in flight (Fitzpatrick <it>et al...
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| Format: | Article |
| Language: | English |
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BMC
2007-03-01
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| Series: | BMC Biology |
| Online Access: | http://www.biomedcentral.com/1741-7007/5/8 |
| _version_ | 1811293626862403584 |
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| author | Collinson J Martin |
| author_facet | Collinson J Martin |
| author_sort | Collinson J Martin |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>The apparent rediscovery of the Ivory-billed Woodpecker <it>Campephilus principalis </it>in Arkansas, USA, previously feared extinct, was supported by video evidence of a single bird in flight (Fitzpatrick <it>et al</it>, <it>Science </it>2005, <b>308</b>:1460–1462). Plumage patterns and wingbeat frequency of the putative Ivory-billed Woodpecker were said to be incompatible with the only possible confusion species native to the area, the Pileated Woodpecker <it>Dryocopus pileatus</it>.</p> <p>Results</p> <p>New video analysis of Pileated Woodpeckers in escape flights comparable to that of the putative Ivory-billed Woodpecker filmed in Arkansas shows that Pileated Woodpeckers can display a wingbeat frequency equivalent to that of the Arkansas bird during escape flight. The critical frames from the Arkansas video that were used to identify the bird as an Ivory-billed Woodpecker are shown to be equally, or more, compatible with the Pileated Woodpecker.</p> <p>Conclusion</p> <p>The identification of the bird filmed in Arkansas in April 2004 as an Ivory-billed Woodpecker is best regarded as unsafe. The similarities between the Arkansas bird and known Pileated Woodpeckers suggest that it was most likely a Pileated Woodpecker.</p> |
| first_indexed | 2024-04-13T05:04:16Z |
| format | Article |
| id | doaj.art-33aab04e48d940f784b54d33a1a9761e |
| institution | Directory Open Access Journal |
| issn | 1741-7007 |
| language | English |
| last_indexed | 2024-04-13T05:04:16Z |
| publishDate | 2007-03-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Biology |
| spelling | doaj.art-33aab04e48d940f784b54d33a1a9761e2022-12-22T03:01:13ZengBMCBMC Biology1741-70072007-03-0151810.1186/1741-7007-5-8Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America?Collinson J Martin<p>Abstract</p> <p>Background</p> <p>The apparent rediscovery of the Ivory-billed Woodpecker <it>Campephilus principalis </it>in Arkansas, USA, previously feared extinct, was supported by video evidence of a single bird in flight (Fitzpatrick <it>et al</it>, <it>Science </it>2005, <b>308</b>:1460–1462). Plumage patterns and wingbeat frequency of the putative Ivory-billed Woodpecker were said to be incompatible with the only possible confusion species native to the area, the Pileated Woodpecker <it>Dryocopus pileatus</it>.</p> <p>Results</p> <p>New video analysis of Pileated Woodpeckers in escape flights comparable to that of the putative Ivory-billed Woodpecker filmed in Arkansas shows that Pileated Woodpeckers can display a wingbeat frequency equivalent to that of the Arkansas bird during escape flight. The critical frames from the Arkansas video that were used to identify the bird as an Ivory-billed Woodpecker are shown to be equally, or more, compatible with the Pileated Woodpecker.</p> <p>Conclusion</p> <p>The identification of the bird filmed in Arkansas in April 2004 as an Ivory-billed Woodpecker is best regarded as unsafe. The similarities between the Arkansas bird and known Pileated Woodpeckers suggest that it was most likely a Pileated Woodpecker.</p>http://www.biomedcentral.com/1741-7007/5/8 |
| spellingShingle | Collinson J Martin Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? BMC Biology |
| title | Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? |
| title_full | Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? |
| title_fullStr | Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? |
| title_full_unstemmed | Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? |
| title_short | Video analysis of the escape flight of Pileated Woodpecker <it>Dryocopus pileatus</it>: does the Ivory-billed Woodpecker <it>Campephilus principalis </it>persist in continental North America? |
| title_sort | video analysis of the escape flight of pileated woodpecker it dryocopus pileatus it does the ivory billed woodpecker it campephilus principalis it persist in continental north america |
| url | http://www.biomedcentral.com/1741-7007/5/8 |
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