A CCTV footage showed a mysterious moment when suddenly a flock of migratory birds, specifically yellow-headed blackbirds, fell from the sky of Chihuahua, Mexico.
Migratory birds are both attracted and repelled by the light pollution in the cities. Researchers believe that cities can do something to help these migratory birds.
Various species of small songbirds are dying in parts of British Columbia, in Canada - and the deaths are linked to a salmonella outbreak from birdbaths and feeders.
In a fantastic instance of citizen science, public onlookers helped scientists collect data on over 200 bird species at the Seven Islands State Birding Park in Kodak, Tennessee.
The study, which is published in Nature, is a first of its kind: it is one of the first observations on the impacts of climate change in bird migration timing on a continental scale.