FLICKR, JIM MCSWEENEY
(See A.L.K. Nilsson et al., "Energy reserves, information need and a pinch of personality determine decision-making on route in partially migratory blue tits," PLOS ONE, doi:10.1371/journal.pone.0163213, 2016.)
Image of the Day: On the Move
Some blue tits (Cyanistes caeruleus) migrate earlier in the season than others. Late movers seem to make up for lost time by foraging more aggressively, researchers report.
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