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. 2019 Jan 3;189(2):329–337. doi: 10.1007/s00442-018-04331-7

Fig. 2.

Fig. 2

Nightly a body temperature (Tb) in blue tits and b minimum body temperature (Tb-min) in great tits roosting in nest boxes as a function of minimum nightly ambient temperature (Ta), separated on young (first winter) and old (second winter or older) birds. All birds were exposed to an increased perceived predation risk, either via handling (great tits) or via olfactory cues (blue tits). Shaded bands represent model-estimated standard errors (± SE)

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