Blackbirds found to rest earlier at dusk when sick

A trio of biologists at Lund University in Sweden has found that blackbirds that feel ill tend to rest earlier at dusk than control birds. In their study, reported in the Proceedings of the Royal Society B, Rosie Lennon, Shivani Ronanki and Arne Hegemann tagged wild Eurasian blackbirds with accelerometers and studied their movements over the following 48 days.