Usually when we go out to feed the lambs there is a pretty large group waiting at the gate, but there are always others that we need to find. Starting out over the top of the field, if you look over your shoulder the scene looks like this -- much like 'Mary Had a Little Lamb', but with many lambs following -- we go to find the others.
As many shepherd/ess/s before us, we call the lambs - "C'mon Sheep!", "Sheeee-eep!", "C'mon Sheep!" First one, and then another looks up. "Baa, baa" the word is passed from one to another and then as if the spirit strikes them all at once... they come.