188 The Wilson Bulletin — No. 97 



nestlings were wide awake, but settled down as much as pos- 

 sible on account of the wind. Fifteen minutes later they 

 raised their heads and chirped and in a minute a parent flew 

 to the tree with blue berries. In half a minute it flew away, 

 but it was back in three minutes with more berries and each 

 nestling received one. After this feeding the young birds 

 seemed more active. They stood up and preened their feath- 

 ers, opening their mouths and stretching their heads out from 

 the nest. 



In the afternoon the young birds were sitting up as if ex- 

 pectant. At 1 :30 I called to some one passing and they 

 opened their mouths. Three minutes later a parent ap- 

 proached and fed them with amelanchier berries. It flew ofif, 

 but was back in a minute with blue berries. The young birds 

 pushed against each other in their eagerness so that the par- 

 ent flew to the other side of the nest in order to feed them all. 

 At 1 :50 a nestling stood on the edge of the nest. When a par- 

 ent approached with blue berries, fifteen minutes later, it had 

 hardly room to get on the nest. I broke two blue berries and 

 placed pieces on the bills of the young birds. One ate its piece 

 and I gave it another, which it swallowed eagerly. At the 

 first trial the other two did not eat. After that they seized 

 the berries so quickly that they almost bit my fingers. They 

 did not seem at all afraid, but seemed willing to eat as long 

 as I could supply them with berries. 



At seven o'clock on August first I found the three nestlings 

 still in the nest, but one flew ofl:" at my approach. On its first 

 attempt it flew tbout twenty feet, and then flew to a tree 

 twelve feet away. In the next hour it was fed more fre- 

 quently than the other two birds, which remained on the nest. 



E. Observation of Two Young Birds in a Cage. 



In the afternoon the two remaining nestlings were taken 

 from the nest and put in a bird cage, which was placed on a 

 window sill of one of the Laboratory Buildings. The large 

 window was kept open and the parent waxwings came to feed 

 the young regularly. At first a parent would fly to the win- 



