Despite the dramatic difference between day and nightlife, how fish exploit different times of day has not been studied systematically. Scientists explored alterations in the circadian timing of activity and the duration of rest-wake cycles in Lake Malawi’s cichlids and identified the first single nocturnal species. Timing and duration of rest and activity varies dramatically, and continuously, between populations of Lake Malawi cichlids, providing a system for exploring the molecular and neural basis underlying variation in nocturnal activity.
A new study from scientists at the Cornell Lab of Ornithology examines public attitudes toward non-native bird species and whether people are willing to manage them to protect native cavity-nesting birds, such as Eastern Bluebirds and the American Kestrel. The findings are published in the Journal of Environmental Management.