Index 



2 55 



Wren Continued. 



Crested, illustration of parental 

 instinct in, xxi 



Young, desertion of, by Swallows 

 and Martins, n; of birds, as 

 strong lure, 15; proper age of, 

 for change of nest-site 16; ex- 

 posure of, to intense heat, 18; 

 danger to, from insufficient food, 

 20; study of, at nest, 20; cats, 

 as enemies of, 28-29; by Pigeons, 

 29; rate of feeding of, in War- 

 bling Vireo, 54; protection of, 63; 

 food of, in Goldfinch, 87; auto- 

 matic response in gullet of, 92, 

 198 ; peculiar posture of, in Cedar- 

 bird, 99; feeding habits of, in 

 Night Hawk, 132, 134; walking 



backward habit of, in King- 

 fishers, 136, 138; habits of, in 

 captive Kingfishers, 145; lack of 

 discrimination in, 165, 166, 220- 

 221; development in the egg, and 

 hatching of, 170-172; brooding 

 and feeding of, 173-186; rate of 

 growth of, 186-188; inspection 

 and cleaning of, 188-193; char- 

 acter of excreta of, 189; use of 

 excreta of, as food by adults, 

 189-193 ; instinctive behavior of, 

 199; instinct of fear of, 214-220; 

 in domestic Chick, 218-219; fear 

 in Black Ducklings, 219; prema- 

 ture development of instinct of 

 fear in, 219-220; use of pot-belly 

 of, 220; acquisition of fear of spe- 

 cial objects in, 221-222; feeding 

 of, in Flicker, 226 

 Yawning in birds 180 



