With very cold weather on its way tomorrow it’s hard to believe that in three to four weeks ice will start to break up in southern Pennsylvania and ducks will begin to migrate north.  When they do, they’ll be in an amorous mood.

Last month Cornell Lab eNews featured this video of courtship behavior in mallards, king eiders, common goldeneyes and red-breasted mergansers.  Watch the video and you’ll learn their moves before their return in early spring.

When the ice breaks up goldeneyes will throw back their heads and “crow.”

(video from Cornell Lab of Ornithology)