Sleeping birds do not respond to predator odour. by Luisa Amo, Samuel P Caro, Marcel E Visser

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Song competition affects monoamine levels in sensory and motor forebrain regions of male Lincoln's sparrows (Melospiza lincolnii). by Kendra B Sewall, Samuel P Caro, Keith W Sockman

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Olfactory sex recognition investigated in Antarctic prions. by Francesco Bonadonna, Samuel P Caro, M de L Brooke

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The case of the missing mechanism: how does temperature influence seasonal timing in endotherms? by Samuel P Caro, Sonja V Schaper, Roelof A Hut, Gregory F Ball, Marcel E Visser

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Mate preference of female blue tits varies with experimental photoperiod. by Laura B Reparaz, Kees van Oers, Marc Naguib, Claire Doutrelant, Marcel E Visser, Samuel P Caro

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