INDEX 



341 



cipient, 118, 119; come near to 

 attacking one, on one's approach- 

 ing their nest, 121 ; mode of 

 attack ineffective, 122 

 Gulls, Herring, fighting of, 108, 

 109 ; power of retaining a mental 

 image, lio; curious behaviour 

 of a pair, no, in; habit of 

 forcing each other or other gulls 

 to disgorge fish incipient, 118, 

 119; feed young by disgorging 

 fish, 119, 120; disgorge fish for 

 each other, 119, 120 



Habits, variations of, more inter- 

 esting than of structure, 228 ; 

 may be marked in transitu, 

 229 ; plasticity of, 48 

 Hare, disturbing rooks, 227 

 Hate, oneself, a good way to, 



335 



Hedge-sparrow, at straw-stacks m 



winter, 201, 202 

 Heine, allusion of to the nightingale, 



313 



Heron, must wait a little, 337 



Herring, going a progress twice, 

 116. Head absent in those dis- 

 gorged by great skua for its 

 young, 116, 117; possible ex- 

 planations of this, 117, 118. Pro- 

 fusion of, brought by great skua 

 for its young, 1 1 8 



Homer, may be caught up by a 

 butterfly, 335 



Hooded Crow, flying with peewits, 

 27, 28 ; frolicking or skirmishing 

 with raven, 137 ; curious antics 

 of, 137, 138 ; flying with rooks, 

 296 ; consorting with rooks in 

 the fields, 296 ; may sometimes 

 roost with rooks, 296 ; when 

 with rooks acts as though of the 

 same species, 296 



Hudson, Mr, views of, referred to, 

 79, 80, 81 



Kestrel, importunity of female, 



112 

 Kittiwakes, habit of forcing each 



other or other gulls to disgorge 



fish incipient, 118; will turn to 

 bay and drive off Arctic skua, 

 128; roosting in extraordinary 

 numbers, 197, 198 



Language, idea as to origin of, 

 suggested by rooks, 288, 289 



Larks {see Skylark) 



Life, study of, as important as that 

 of death, 332 



Linnet, an example of sexual selec- 

 tion acting in two directions, 318 



Lyre-bird, an example of a highly 

 adorned species which is also 

 musical, 334 



Merganser, manner of diving of, 



153, 154 



Meves, M., on cause of bleating in 

 the snipe, 53 



Moor-hen, becoming a partridge or 

 plover, 48 ; an orchestra of pe- 

 culiar brazen instruments, 57. 

 Manner of diving of, 156, 157, 

 158 ; habit of, may be becoming 

 established, 1 58 ; and may differ in 

 different localities, 158. Browses 

 grass, 227 ; wariness of, 226 ; 

 power of drawing an inference, 

 227 ; independent spirit and 

 originality, 227, 228 



Naturalist in La Plata, re- 

 ferred to, 79, 80, 81 



Nightingale, male not singing much 

 during nest-building, 307 ; song 

 of, a vehicle of hatred and rivalry, 

 308. Conduct of rival males, 308, 

 309 ; similar to wheatears, 308. 

 Conduct of female during combats 

 of rival males, 309, 310 ; croaking 

 notes of, 310. Song probably 

 founded on these, 310; which 

 would account for its low key, 

 312; how differing from that of 

 thrush, blackcap, skylark, etc., 

 312; does not include every ex- 

 cellence, 312 ; frequent pauses 

 in, 312 ; when at its best, 313 ; 



