Darwin's manufactory hypothesis is confirmed and predicts the extinction risk of extant birds. od David G Haskell, Anupam Adhikari

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Simulated birdwatchers' playback affects the behavior of two tropical birds. od J Berton C Harris, David G Haskell

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Land Cover Sampling Biases Associated with Roadside Bird Surveys od J. Berton C. Harris, David G. Haskell

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Depauperate avifauna in plantations compared to forests and exurban areas. od David G Haskell, Jonathan P Evans, Neil W Pelkey

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