Animal Behavior – CrashCourse Biology #25

Behavior is action in response to a stimulus. My cat Cameo is now responding to both an external stimulus the sound of a bag of treats, and an internal stimulus her hunger, or at least her insatiable desire for treats. Sometimes animal behavior can seem really far out, but if you look closely enough, you Read more…

How Nature Works: White-winged Crossbill Feeding Technique

Of the 10000 bird species on Earth, only five, all in the finch family, have crossed bills. The White-winged Crossbill is found in the higher latitudes of North America, traveling from coast to coast in large flocks in search of white spruce trees. Females are greenish yellow, males red, and both have two distinct white Read more…