not come to take over. This is the 16th. day of incubation, and one chick should be born if the precedent of nest No. 5 is followed. However, the first set of eggs last year was sterile. 9:00 A.M. At 8:50 I went to the nest, B on duty. I felt under him after giving him a worm, and thought I felt a youngster, but was not certain. B protested wordlessly, but was not much disturbed, as he took worms gratefully. Fortunately Greenie's approach call was heard soon, and in a few moments, she came with something in the tip of her bill; B stood up and G reached under him before he had time to leave and pushed whatever the insect was (a grub) down the throat of a purple-black youngster that head automatically opened its mouth to receive it. B left and G took charge. This was, possibly, the first feeding and there was no regurgitation on the part of the parent bird. As far as this pair of thrashers is concerned, regurgi- tational feeding does not exist. As this is St. Patrick's Day, the youngster is automatically named already. About noon I went to the glade to note progress. B came from outside, had three worms himself, then took the fourth to the ground where he prepared it thoroughly at my feet, uttering the blue-bird call while doing so. He broke it up thoroughly. All this meant that he intended to feed the young bird according to previous practice, and he accordingly carried the worm up to the nest, giving his ap- proach signal all the way, Greenie leaving as he arrived. There was no singing to herald the arrival of the nestling, as far as I could tell, and the parents have been silent all morning (I have been working about 100 feet away) except for the approach signal. About 5:30, at change of shift, I looked into the nest. It seemed full of young thrashers. I pawed around in it, Brownie wait- ing patiently on the rim, until an egg was found. Another young-