Nocturnal. Nocturnal behavior means the animal is active at night, which some people believe is the deer’s sleep pattern. Diurnal. Diurnal sleep and waking patterns mean the creature is most ...

The sun bear, a native species of Southeast Asia, is exclusively diurnal under natural circumstances, but flipped to nocturnal after encountering human researchers. (Connormah, cc-by-sa-2.0) ...

CBC ParentsActivities Nocturnal Animals Sensory Bin By Ann Harquail, My Nearest and Dearest Nov 18, 2014 ...

"Everybody knows it, but--as a group of biomedical researchers--we ignore it. And if you ignore it, then can you really translate those data on a nocturnal animal to a diurnal animal when you're ...

Chastenay says during totality, the animals engaged in normal, instinctive evening behaviors with little interruption. Nocturnal animals were active, and diurnal animals were calm.

Eclipses can fool certain animals into thinking that it’s the evening, causing them to to revert to their nocturnal or crepuscular behaviors. For example, in 1932, researchers observed crickets ...