Snowbird A hen mallard made her return migration to northwest Wyoming from points south in time for the latest blast of winter weather. (Timothy C. Mayo Photography. All rights reserved.) March 18, 2016 by WyoFile Staff Leave a Comment TweetSharePinEmail0 SharesWaterfowl and winter weather have both returned to much of Wyoming. The birds are a heartening sign that spring is on the way, while the ice and wind serve notice that Old Man Winter still deals the cards in this part of the world.