Many travel great distances to breed here
4:00 am
Fri April 18, 2014

Still Uncertain Why Birds Migrate

Next, we hear from DNR biologist Jeremy Holtz with his continuing series, "Wildlife Matters". Today he explores why birds bother at all to return to the Northwoods.

Tachycineta bicolor or Tree Swallow
Tachycineta bicolor or Tree Swallow
Credit en.wikipedia.org