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A label of health: a previous immune challenge is reflected in the expression of a female plumage trait

by Hanssen, Sveinn A, Hasselquist, Dennis, Folstad, Ivar, Erikstad, Kjell E
Published in Biology Letters (2008)
“... the expression of a plumage trait. We also report an unexpected difference in the expression of this white...”

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2

Travelling on a budget: predictions and ecological evidence for bottlenecks in the annual cycle of long-distance migrants

by Buehler, Deborah M, Piersma, Theunis
Published in Philosophical Transactions of the Royal Society B: Biological Sciences (2007)
“... focusing on the quality of breeding plumage and the timing of moult as indicators in the six subspecies...”

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Feather mites (Acari, Astigmata) from Azorean passerines (Aves, Passeriformes): lower species richness compared to European mainland

by Rodrigues, Pedro, Mironov, Sergey, Sychra, Oldrich, Resendes, Roberto, Literak, Ivan
Published in Parasite (2015)
“... the same full complex of mite species as commonly occurs in the plumage of their closest relatives...”

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4

Ultraviolet reflecting photonic microstructures in the King Penguin beak

by Dresp, Birgitta, Jouventin, Pierre, Langley, Keith
Published in Biology Letters (2005)
“... and auricular plumage, but only its beak reflects UV, a property considered to influence its sexual attraction...”

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5

Fitness increases with partner and neighbour allopreening

by Lewis, Sue, Roberts, Gilbert, Harris, Mike P, Prigmore, Carina, Wanless, Sarah
Published in Biology Letters (2007)
“... not only removes ectoparasites and maintains plumage condition, but may also have important social...”

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6

Are Morphometrics Sufficient for Estimating Age of Pre-Fledging Birds in the Field? A Test Using Common Terns (Sterna hirundo)

by Wails, Christy N., Oswald, Stephen A., Arnold, Jennifer M.
Published in PLoS ONE (2014)
“... it is not possible to study known individuals from birth, morphometrics (predominantly patterns of plumage...”

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7

Intraspecific evolutionary relationships among peregrine falcons in western North American high latitudes

by Talbot, Sandra L., Sage, George K., Sonsthagen, Sarah A., Gravley, Meg C., Swem, Ted, Williams, Jeffrey C., Longmire, Jonathan L., Ambrose, Skip, Flamme, Melanie J., Lewis, Stephen B., Phillips, Laura, Anderson, Clifford, White, Clayton M.
Published in PLOS ONE (2017)
“... because of the polytypic nature of melanin-based plumage characteristics used in subspecies designations...”

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