Mary Poppins tells the Banks children she will stay until the wind changes. American Robbins (and almost all birds) understand this fact, and during the southern migration pay attention to this rule. For over 7 days here in northern Minnesota we had very strong winds from southerly directions. However on Saturday the winds changes and blew with a strong velocity out of the Northwest. In a little under five hours at Stoney Point, Neil Gilbert reported 25,294 Robins on the move … migrating south along the lakeshore.
There is a buoy out on Lake Superior not too far from Stoney Point. Here are two screenshots of the conditions … first as reported Wednesday, and then on Saturday. Note how the wind which had been very strong in the face of the southward migration switched with a vengeance.
I was out hiking the forest near my home on Saturday afternoon. The number of birds, particularly Robins was amazing. If one knew where the Mountain Ash trees and their berries were located in the woods, it was easy to find hundreds of birds gorging themselves.
Pay attention to the wind direction and speed during migrations. You will have better birding experiences.