{"fact":"Crows prefer company, especially after a pre-roost get-together. Crows that attend the same pre-roost gathering are much more likely to end up at the same roosting site compared to crows that didn't meet up beforehand.","context":"The two crows in an assigned pair were found roosting together significantly more often if they had been recorded attending the same pre-roost earlier that day than if they had been recorded as not attending the same pre-roost [37.6% (n=409) vs 1.6% (n=1659); χ2=537.67, df=1, P<0.0001].","source":"Geir A. Sonerud; Henning Hansen; Christian A. Smedshaug, Individual roosting strategies in a flock-living bird: movement and social cohesion of hooded crows (Corvus corone cornix) from pre-roost gatherings to roost sites, 10.1007/s00265-001-0440-4","index":578}