A most certain sign of spring — dependent not on early warmth or weird weather — is an American Goldfinch molting into spring plumage. This male is replacing winter feathers with his better-known bright yellow and deep black. This change is triggered by the increasing amount of daylight we are receiving. The sun's return path to the north might be the only climate constant we have.
Our single climate constant is on display
Increasing daylight triggers plumage change
By jim williams
March 20, 2017 at 11:02PM
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jim williams
Several home watch businesses joined together in the Minnesota Home Watch Collaborative to stay vigilant across the whole state.
