Winter's freezing winds and snow should remind us that many birds maintain permanent residency instead of migrating to warmer climates. Besides finding adequate shelter, their most important task is obtaining a sufficient and steady supply of food.
Iowa Science Teachers Journal
© Copyright 1980 by the Iowa Academy of Science
Iowa Science Teachers Journal: Vol. 17:
3, Article 13.
Available at: https://scholarworks.uni.edu/istj/vol17/iss3/13