(556) instead of climbing over, repeating his queelick call all of this time and appearing to be hoplessly baffled. When I moved to another spot he found no great difficulty in climbing up and over, but in order to reach my knee, he found it necessary to climb up into a small crab- apple tree by which I sat, so that he could drop down on to me with- out undergoing the fatigue of an upward flight of a couple of feet. One worm was enough, so he retired to the bushes 5 or 6 feet behind me and sang the Russet-backed thrush song several times softly, with no introductory or connecting phrases of his own--an unusual per- formance for him. This was followed by the ground squirrel and the tree-toad imitations, again with no phrases of his own. Usually imitations are interpolated in his own compositions and form but a small part of them. It is worth noting, also, that there has been no Russet-backed thrush heard here for several months--this is not their season. Consequently it appears that the thrasher does not need to have an exemplar at hand constantly in order to reproduce his music. During this period Greenie was present most of the time, but not especially interested. The wren, however, got his share of worms. Night roost. 5:37. Brownie and Greenie are both in their night roosts about 6 feet apart; B in his accustomed place and G in the place where he was seen to go for the first time some weeks ago. Presumably he has occupied it regularly ever since. B is protected from north winds by the wind-screen, but G is not. Before going to roost Greenie inspected thoroughly a shelter which I placed in the lath house some months ago. This is the first time I have seen any bird enter it. Evidently neither thrasher cares for the glass house as a roost- ing place. They are not afraid of it as they have demonstrated countless times. Their roosts are about 3 feet from it. Jan. 28th. On entering the glade at 9 A.M. the two thrashers and the wren came out of the bushes immediately, all eager for worms; so much so