Most of the birds which you and I know best are fair-weather friends. That is to say, they stay with us just so long as the sun is warm and food is plentiful, but when winter comes, they forsake us. Nearly all of our common birds behave thus, which must mean, if birds are anything like humans, that it is our climate and not ourselves that they like.
©1932 by Iowa State Teachers College
"Consider the Sparrow,"
Science Bulletin: Vol. 4:
6, Article 6.
Available at: https://scholarworks.uni.edu/science_bulletin/vol4/iss6/6