I have been filming a American Robins nest with chicks. I discoved the nest about three days ago. I have noticed that the mother or father will fly in with a worm or some other grub and feed it to the waiting chicks. He/she will apparently wait around for a couple of minutes and before leaving the nest he/she will take something from one of the chicks and seem to swallow whatever it is. I have a picture of it below. Is this some kind of waist or what. Can anyone help? Thanks ahead of time.
Mac