A check of Nexrad tonight showed a bit of migration along the east coast just ahead of the big storm moving through. Behind the front, little if any movement. A look at the radar in the Florida Keys shows some activity.
In this image the returns over the keys is actually a movement of birds that came out of Cuba and are headed to Florida. In the past there was a radar image in Cuba that was viewable but it was often not functioning and I haven't seen an image from there in a while.
Once this big storm system moves offshore and the winds switch around the movement of birds should resume. The next 2 nights should see birds headed north.