Migratory birds return to Wisconsin earlier than normal

WISCONSIN (CBS 58) -- Many migratory birds are returning to Wisconsin earlier than normal. From Canada geese to American robins, experts say this is a good indication that spring is right around the corner.

“They bring us joy, to hear a robin song or to see an eagle fly overhead,” said Ryan Brady, a conservation biologist at the Wisconsin Department of Natural Resources (DNR).

So far, it's been a mild year when it comes to weather in Wisconsin.

"Folks have probably noticed more robins are already returning, black birds like red wing black birds...flocks of sandhill cranes...swans, and geese...and a wide variety of duck species," Brady said.

That's why migration for short-distance birds is off to a quick start.

"Some birds that would typically get back around the early part of March have already started to return, right from the middle parts of February and the latter part of February,” he added.

Brady told CBS 58 News he has been studying birds for more than 25 years. He said birds are very in tune with environmental cues and their access to food.

"Bird migration in general is triggered at the highest level by lengthening daylight," Brady added.

And that trend could still change depending on how weather conditions play out.

"They may have to adjust their behavior by feeding more or reversing their migration back to more southern climates," Brady said.

This past winter brought us record warmth, and it just makes sense that some birds are taking advantage of warmer weather.