Correlations between ultraviolet coloration, overwinter survival and offspring sex ratio in the blue tit.
We studied the correlations between offspring sex ratio, UV coloration and overwinter survival in a population of blue tits, breeding in Gotland, Sweden, over three consecutive breeding seasons. In 2 of 3 years, we found that females paired to males with relatively brighter UV-coloration produced a...
Main Authors: | Griffith, S, Ornborg, J, Russell, A, Andersson, S, Sheldon, B |
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Format: | Journal article |
Language: | English |
Published: |
2003
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