John Switzer | From the Stump: Seeing robins in winter the new
norm (click for article)
I remember when seeing a robin in the winter was an oddity.
McCormac told me there is a reason why winter robins are common now, and it's
something that is not necessarily good for the birds.
He said all the fruit-bearing, non-native ornamental trees and
plants we landscape with cause some robins to stay put instead of migrating far
enough south to escape our often-brutal winters.