Hard to swallow!!

These four are part of a group of about twenty that gathered on the snow bar on our roof today.
I thinks it's too early for them to be getting ready to migrate.
Unless they know something about the weather that we don't!!
P.S. Am I the first person to mention snow on Blip since Spring???
P.P.S. A snow bar is meant to stop melting snow sliding down and bringing down the guttering