ed by N2, who took the part of spectator, principally, While Neo was preoccupied with the nest she came over to where I was sit- ting by Rhody's tree and I gave her all the meal-worms she wanted. She then ran back along the path, picked up a billful of fibrous material and carried it to the nest. N2's irides. While she was with me it was noted that she is trim and sleek in contrast with Neo and that her eyes (irides) are of the same rich, orange-brown as his. ?!?(Where does this question stand now?) At noon: Thrashers and road-runner working at their nests. Neo suddenly (about) 10:30) became very lame. 12:20. Neo still lame. Just now he came "running" to me using only one leg, moving with surprising speed, seemingly no slow- er than when using both. This method of locomotion is really true hopping. At present, when he stands still, he immediately tucks the left foot up under his feathers. He persists in his nesting oper- ations notwithstanding what must be a serious handicap in carrying twigs and forcing his way upward through the tangled growth. On second thought, this "running with one leg" was an amazing performance, and I was amazed. If I had not seen that he carried one foot off of the ground during its performance, I should have thought it an ordinary, fast run. At 1:30 Neo was lying still in his nest and I did not dis- turb him by suggesting food. The nest, especially when he is in it, can now be clearly distinguished from its surroundings. It is, as yet, but a fragile, slightly concave platform. I went off and sat down by Rhody's tree. (He was up in the cage lying on his "arm-chair" shelf enjoying the sun and occasionally feinting at the magpies). N2 saw me from 20 yards away and came for worms on her own volition and without Neo's presence to give moral support. She is learning. At about 2 o'clock I moved to the vicinity of the nest. Neo came promptly, still lame, with a gate made up of a mixture of one- legged and two legged running and plain hopping. Mar. 5th. There was early song by Neo off to the west. During the day he remained home most of the time working or sitting silently in his nest. N2 works little, but continues to take advantage of Neo's devoition to his labors to get food from me without interference from him. As late as 5:30 P.M. Neo was in his nest. At 6:03 he was not there, but when I whistled and called he scrpped from somewhere near the cage and came down to investigate, scrpiping for a minute or so from an oak over my head. He would not come down for worms; perhaps because on account of heavy clouds low in the west it was already rather dark. There was considerable rain during the day, yet Neo kept on working and sitting in the nest. Rhody performed true to seasonal form, but worked little on his nest and sang not at all. Such work as he was seen to do was in line with his present "policy" of making the structure more compact than his first attempt. Thus he used no long, stiff twigs, but select- ed from the material made available for him that same dried weed- stalk. I scattered, over an area about 5 feet in diameter, what I thought would be suitable soft, flexible material for him, at his take-off point, giving him a greater range from which to select. It contained leaf portions of bracken, fine honeysuckle shoots, gold- enrod flower stalks, with only a small proportion of the favored