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Elsevier

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Parallel variation in haemoglobin concentration in nestling-rearing Blue Tits Cyanistes caeruleus and Great Tits Parus major

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Museum and Institute of Zoology, Polish Academy of Sciences

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Egg size variation in Blue Tits Cyanistes caeruleus and Great Tits Parus major in relation to habitat differences in snail abundance

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Museum and Institute of Zoology, Polish Academy of Sciences

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Faecal analysis as a method of nestling diet determination in insectivorous birds: a case study in Blue Tits Cyanistes caeruleus and Great Tits Parus major

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Partnerships and mechanisms of divorce in the great skua

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