1896. that the chick has not been taken away. The fact that it has not been heard may indicate merely that, being the only one, it is too well fed to cry. Watching the Feeding Operation of the Allen's Humming-bird. I began a continuous watch of the Allen Hummer lasting from 3:30 to 4:54 P.M. The log follows: 3:30 P.M.; Female on the nest. (Male was not seen at ) 3:40. After a short absence-- (all during this period) time of leaving the nest not taken--she returned (at 3:40) and fed both chicks, each being fed alternately, with strict impartiality, twice. 3:45. She flies from the nest. 3:48½ Returns, but does no feeding. 3:56 Flies away again. 3:59 Returns, but does not feeding. As before, covers chicks immediately--in fact, lands in the nest. 4:06 Leaves again. 4:11½ Returns, feeds both chicks while she sits on the rim of the nest. At first feeding observed the bill was thrust deeply down the throat of one young and not so deeply down the other. This time the "skewering" was less deep. 4:29½ Leaves again. 4:32½ Back in nest again--no feeding. 4:42¼ Leaves. 4:46 Back in nest again--no feeding. 4:52 Away again. 4:58-53 Back--feeds both. This ended the period of continuous observation, but she was seen to feed both again at 5:15--no observations having been made in the meantime. At no time during this period was it possible to see anything in her bill at 6 to 8 feet distance using 3x glasses. Feeding was apparently by regurgitation, the action being slow and deliberate, requiring 20 or 30 seconds to feed the two chicks. It will be noted that she made two or three trips abroad between feedings--presumably to secure enough food to feed both and perhaps to allow partial digestion to take place. She did not feed them except immediately on returning from an absence; that is, after one feeding she had to go away to get more food; so apparently the period during which the food was subjected to the action of her own digestive apparatus (if any such action occurred) could not have exceeded the length of her absences. (This is pure speculation based on insufficient material). At no time was she seen to add to the nest structure. Yellow-jackets occasionally are seen buzzing about the nest, but not landing on it, seeming to be more interested in the nearby leaves. Hence, if this bird used any adhesive material in binding the structure or applying the outside covering, it prob- ably was not the nectar of flowers. July 3rd. A Motion picture was taken of the Allen's hurmer feeding her young at 4:15 P.M. Only one chick was seen to respond and it may be that one dead or missing. At the time yesterday's record was made it was seen that one chick was smaller than the other. When she returns from an absence there is usually an accumulation of pollen on her upper mandible. In feeding the chicks much of this is wiped off. (See frame from motion picture film July 3, 4:13 P.M.) The young thrasher was encountered in the glade today. His parents were absent, but N2 finally appeared from the north.