Index. 143 



H. 



Habit, definition of, as distinguished from habits in the popular sense, xvii; the formation of, 3, 4, 5, 

 in, 116; of Cedar-bird in alighting on tent, 62; of sipping maple sap, in Cedar-bird, 62; in 

 manner of approach to nest in Red-eyed Vireo, 111-112; of walking backward and sitting 

 still in young Kingfishers explained, 89; of entering and leaving tunnel, in Kingfisher, 90, 91; 

 of Kingfisher to prevent escape of prey, 92 ; of eating excreta, how acquired in a hungry bird, 

 109, no; illustration of, in nest-cleaning, 112; change of food, in Rhinoceros-bird, 116; force 

 and variation of, in nesting of Osprey, 115, 116; plasticity of, in reference to food, 116; of fear, 

 of special objects, 121. 



Hawk, the Fish (see Osprey) ; Hen, the effect of, in sky upon chick in dooryard, 120. 



Hawks feeding on locusts, 116. 



Hellgamite, larva? of grampus, 103. 



Hinde, Captain, 116. 



Holderness (N. H.), spring arrival of Bluebirds at, 71; habits of Pine Grosbeaks in winter and spring 

 at, 135. 



Humming-bird, eggs and young of, 117. 



Hunger in relation to fear, 126-128. 



I. 



Incubation, in Kingbird, 21; in Robin, 36; in Cedar-bird, 58; of Eagle in captivity, 134; behavior of 

 birds during, 134. 



Insects, struggles of, when brought to nest, 102, 103. 



Inspection of young and nest, the importance, regularity, and significance of, 104-106. (See also under 

 names of species.) 



Instincts, denned in broad and narrow sense, xvi: illustration of, in the Robin, xvi; substitution of, by 

 habits, xvii, 4; the great number of , xvi ; determining cause of , xvi ; the parental, analysis of, 

 3; culmination of, 4; strength of, how increased, 3, 4; suppression of, 3; periodic and serial 

 nature of, 3; the fighting, 3, 4 (see Pugnacity) ; parental, relative strength of, in birds, 5, 13; 

 in Orioles, 19; in Kingbirds,. 22; in Redwing Blackbirds, 20, 21; in Robins, 39, 45; in Cedar- 

 birds, 17, 18, 55, 57, 59; in Red-eyed Vireo, 64, 65; in Bluebirds, 72-75; in Night Hawks, 80, 

 82,85; in Kingfishers, 86, 90, 91; use of parental, in taming birds, 130-133; instinctive reactions 

 of young of Cedar-birds, 55; of fear, suppression of, in Red-eyed Vireos, 68; appear- 

 ance of, in young Red-eyed Vireos, 68; of fear, suppression of, in Bluebirds, 72, 73; walk- 

 ing, in vertebrates, 89; of inspection of young and nest, 103-106; cleaning or sanitary, in birds, 

 103-110; dearth of observations upon cleaning, 104; of cleaning nesting site, 107-110; prey- 

 ing, in young Red-eyed Vireos, 67; of preening in young, 65; of Chimney Swift in nest-build- 

 ing, 113; of fear in old and young, 117-124; of fear in domestic chick, 119; of Canada Goose 

 modified in captivity, 129, 130; of " feigning " in Chestnut-sided Warbler, 131, 132. 



Intelligence, human, the roots of, xv, xvi; the sign of, xvii. 



J- 



Jay, Canada, Moosebird (Perisoreus canadensis, Linn.}, tameness and habits of, 129. 

 Jefferson (O.), winter birds at, 128. 



K. 



Kearton, the brothers, blinds designed by, 30. 



Kingbird (Tyrannus tyrannus, Linn.}, the time spent by young of, in nest after change of site, 13; the 

 breeding of, 21; displacement of the nesting bough of, 22; fighting instinct of, 22; suppression 

 of fear in, 22, 23; rate of feeding young of, 22, 27; foster children of, 27; crushing prey by, 

 28; the rejection of indigestible parts of food by, 28; flight from nest of, 28; brooding in, 94, 

 97; economy of food in, 102; escape of prey from bill of, 102, 103; exciting scenes at nest of, 

 103; feeding of large insects to young of, 103; eating excreta of young of, 105; attracted by 

 alarms of other birds, 123; perching on fishing-rod, 125. 



