morphometry |
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navigate by keyword : arctic beak biology bionomics birds ecology environment expedition foot length measure method methodology migration morphology morphometry north ornithology pecker ring science scientist seabirds student study tagging tarsus university wintering zoology |
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Field scientific research. Ornithology: method of tagging as way to study migrations of birds Thick-billed Guillemot, and biometrics helps to explore intraspecific geographic variation |
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