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2by Kylin, HenrikSubjects: “...bill deformation...”
Published 2005
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3by Huffeldt, Nicholas P., Ballesteros, Manuel, Helm, Barbara, Linnebjerg, Jannie F., Merkel, Flemming R., Mosbech, Anders, Frederiksen, MortenSubjects: “...Thick-billed Murre...”
Published in Journal of Ornithology (2024)
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4by Petra Quillfeldt, Andreas Bange, Aude Boutet, Rachael A. Orben, Alastair M. M. Baylis“... during breeding. Previous studies using stable isotope data and geolocators suggested that Thin-billed...”
Published in Animals (2022)
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6by Gaston, Anthony J., Smith, Paul A., Tranquilla, Laura McFarlane, Montevecchi, William A., Fifield, David A., Gilchrist, H. Grant, Hedd, April, Mallory, Mark L., Robertson, Gregory J., Phillips, Richard A.“...thick-billed murre...”
Published in Marine Biology (2011)
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7by Z Yang, B Lagasse, Hui Xiao, M Jackson, C Chiang, D Meville, K Leung, J Li, L Zhang, H Peng, X Gan, W Liu, Z Ma, C Choi“... their southbound migration, with a focus on the ‘Critically Endangered’ Spoon-billed Sandpiper Calidris pygmaea...”
Published 2020
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14“..., the Little Penguin ( Eudyptula minor ) displays sexual dimorphism in bill shape and size. In the present...”
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15by Kaufman, Paul“... of it, it moved closer in to shore, which we felt was unusual. We were studying the bill shape trying to make out...”
Published 1991
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16by Dinsmore, Stephen J.“... scaup, not "peaked" like a Ring-necked Duck. The bill was bluish with a black tip and a narrow white...”
Published 2000
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17“... than females in both species. A combination of bill measurements discriminated 97-98% of individuals...”
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18Published 1994“... variety of sandpipers. The Snowy Plover was pale on the upperparts and white on the underparts. The bill...”
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19by Steinfurth, A, Booth, JM, White, J, Bond, AL, McQuaid, CD“...-specific differences in both bill length and bill depth, with males being the larger sex on each island...”
Published in Endangered Species Research (2019)
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20“... of a couple of the rectrices. The legs were very pale pink rather than yellow. The bill was fairly thin...”
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