Enjoy our cross-curricular unit on hibernating animals, designed to engage young learners in the incredible ways animals ...

Mammals and birds are endotherms, which means they generate their own body heat through relatively high metabolic rates. That high metabolism requires energy, which these animals garner from food. We ...

For a good chunk of the summer, I have been able to monitor the activity of one particular visitor to the feeding station down by my Thinking Chair a little more closely than most of the others.

Don't miss the big stories. Like us on Facebook. Mammals and birds are endotherms, which means they generate their own body heat through relatively high metabolic rates. That high metabolism requires ...