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Activity budgets of animals often show consistent differences between individuals across time, which qualifies them as personality traits. In the case of captive birds, locomotor activity can be divided into two major components – frequency of hopping and flapping flight bouts, which may conceive different information about individual condition. This idea was tested in a 2*2 factorial experiment in...
The associations between behaviour, stress and immune responses are most likely a result of common integration through the neuroendocrine system. Here, we describe associations between behaviour and immunity in great tits, Parus major. Wild‐caught birds were brought into captivity, and their immune function was assessed on the basis of antibody production to a novel Brucella abortus antigen and of...
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