Comment on "Ivory-billed woodpecker (Campephilus principalis) persists in continental North America".
نویسندگان
چکیده
We reanalyzed video presented as confirmation that an ivory-billed woodpecker (Campephilus principalis) persists in Arkansas (Fitzpatrick et al., Reports, 3 June 2005, p. 1460). None of the features described as diagnostic of the ivory-billed woodpecker eliminate a normal pileated woodpecker (Dryocopus pileatus). Although we support efforts to find and protect ivory-billed woodpeckers, the video evidence does not demonstrate that the species persists in the United States.
منابع مشابه
Ivory-billed woodpecker (Campephilus principalis) persists in continental North America.
The ivory-billed woodpecker (Campephilus principalis), long suspected to be extinct, has been rediscovered in the Big Woods region of eastern Arkansas. Visual encounters during 2004 and 2005, and analysis of a video clip from April 2004, confirm the existence of at least one male. Acoustic signatures consistent with Campephilus display drums also have been heard from the region. Extensive effor...
متن کاملPutative audio recordings of the Ivory-billed Woodpecker (Campephilus principalis).
Putative audio recordings of the Ivory-billed Woodpecker (Campephilus principalis) are presented along with discussions of the videos from which they were extracted and the observations that were made when these data were obtained. On two occasions, high-pitched calls were heard coming from the direction of a bird that was identified in the field as an Ivory-billed Woodpecker. These calls seem ...
متن کاملVideo evidence and other information relevant to the conservation of the Ivory-billed Woodpecker (Campephilus principalis)
Despite the publication of three independent papers that reported sightings of the Ivory-billed Woodpecker (Campephilus principalis), its preservation became a controversial topic because nobody has been able to obtain a distinct photo, which is considered the standard form of evidence for documenting birds. An analysis based on a combination of factors related to habitat and behavior suggests ...
متن کاملMid-Pleistocene divergence of Cuban and North American ivory-billed woodpeckers.
We used ancient DNA analysis of seven museum specimens of the endangered North American ivory-billed woodpecker (Campephilus principalis) and three specimens of the species from Cuba to document their degree of differentiation and their relationships to other Campephilus woodpeckers. Analysis of these mtDNA sequences reveals that the Cuban and North American ivory bills, along with the imperial...
متن کاملVideo analysis of the escape flight of Pileated Woodpecker
Background: The apparent rediscovery of the Ivory-billed Woodpecker Campephilus principalis in Arkansas, USA, previously feared extinct, was supported by video evidence of a single bird in flight (Fitzpatrick et al, Science 2005, 308:1460–1462). Plumage patterns and wingbeat frequency of the putative Ivory-billed Woodpecker were said to be incompatible with the only possible confusion species n...
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ورودعنوان ژورنال:
- Science
دوره 311 5767 شماره
صفحات -
تاریخ انتشار 2006