Lots of animals nest, and spring is the height of nesting season.
"It is a natural behavior that crosses all continents around the world, and something that really, everybody does in some way, including humans," says wildlife biologist Jim Pease.
"Usually [nesting behavior] is attributed to pregnant women, but I think that that's wrong. I think men have nesting behavior too, just perhaps in slightly different ways," he says. "When I'm on a canoe trip ... I like to get in the camping spot, get the tent set up, build a fire, brew some coffee, and it makes me feel sort of settled, like I've made that place my own. That's a form of nesting behavior, there's no question about it."
On this wildlife day edition of Talk of Iowa, Charity Nebbe talks with Pease about the various types of nests seen in nature, including those of birds, mammals, reptiles, insects, and fish.