1414 Two or three hours later Julio reported him as sitting in his house-nest in the roost tree, and poking at the twigs with his beak. 8 P.M. The Rufous hummer appeared to gain materially in strength during the afternoon. It was fed about every half hour, sitting on ones hand and reaching eagerly into the bottle. It has not yet attempted to feed from its readily accessible supply in the cage, apparently having formed no food association with it, although it sits right along side of it. This supply is contained in a small vial fastened to another one just like it and parallel to it and the two are hung over the perch in such a way that they hang down at an angle of about 30 degrees from the horizontal, with open ends just above the perch -- one bottle on each side of the perch. The necks are painted red. There is as yet no evidence that this color has approved attractive to him. In order to build up a food association with these bottles (om of which, I should have said, is filled with water) at one of the feedings I had him sit on my left index finger and held the two bottles in my right hand with the tip of one finger closing the dend of the water bottle. He now reached eagerly forward for food; but instead of reaching into the food bottle, confined his attentin to my finger covering the water bottle--not the finger nail--and the space between the two bottles. When I shifted my hand so that he could scarcely overlook the food, he suddenly discovered it and began pumping at a great rate, now and then pausing to rest then reaching with precision into the right bottle again. I had noticed before this that when he was taken in hand he seemed quickly to associate this action with food after a little experience. On this occasion, it appears, that he still had no food association with the bottles themselves, but did associate food with my entire action and, more especially, based on previous experience, with a hand held in front of him. While sitting on my hand after his appetite is satisfied for the time being, he tries his wings, but holds on tight. Also he has developed that same odd characteristic action of the Anna hummer in a free state, of turning his head rhythmically from to side to side . Like the Anna hummer and the thrasher he winks his upper eye- lids. At 9:30 P.M. I heard him on the floor of the cage, so took him out to see if he would eat at this time of night, given the opportun- ity. Although the light was very dim in that part of the room, he reached for the food with precision and kept his bill immersed much longer than usual. He was very hungry (or thirsty). Between draughts he rested; the rest became longer and the draughts shorter until they became mere sips. He now buzzed his wings and began his side to side head motion. This I took to mean that he wanted no more food, so he was restored to his perch and the cage covered. Nothing more was heard from him up to the time I left at 11:30. March 20th. At 7:30 A.M. Brownie was singing in the garden and came prompt- ly to the parapet of the second story porch by my bathroom on call to get his worms. There seems little doubt of his having nest ed elsewhere.