294 



INDEX. 



Ember iza viiliaria, 11 

 Emberiza nivalis, 161 

 Eniberiza pityornis, 1 84 

 Emberiza piisilla, 208, 211 

 Emberiza pyrrhuloides^ 184 

 Emberiza riistica, 118, 20S 

 Emberiza sch(£7iichis^ 22, 210 

 Emigration, ancient routes of, 



120, 121 

 Emigration and Evolution, 112, 



Emigration and Migration, confu- 

 sion between, and definition of 

 terms, 113 

 Emigration, chronic, 118 

 Emigration, importance of, 134 

 Emigration, irruptic, 115 

 Emigration, local causes of, 115 

 Emigration, North Polar, caused 



by Glacial Epoch, 128, 129 

 Emigration, primary causes of, 



113, 114 



Emigration, recent Avian, in the 

 British Islands, 125 



Emigration, resulting in Migra- 

 tion, 126 



Endemic species, vertical Migra- 

 tion not confined to, 138, 140 



English Channel, birds declining 

 to cross, 262 



Ereimetes griseus, 1 84 



Erewietes g7iseiis scolopaceics, 234 



Erithaciis hiscinia, 170, 204 



Erithacus philomcla, 1 84 



Erithacus rubecula, 20 



Erithacus suecica, 43 



Etidro7nias modestus, 145, 146 



Eiidromias modestus rubecola, 146 



Eudromias moriiiellus, yj, 109, 

 138, 204 



Falco amiireiisis, 100, loi, 121 



Falco cesaloji, 174, 209 



Falco peregrinris, 174, 210 



Falco siibbiiteo, 174 



Falco ti)i)umculus, 191 



First Flights, the, 247 



Fly-lines, abnormal direction of, 



206, 208 

 Fly-lines, intricate nature of, 89 



Fringilla canaria, 184 

 Friiigilla cai'duelis, 1 38 

 Fringilla montifringilla, 193, 211 

 Fringillid.^, 165 

 Fuligula cristata, 23 

 Fuligula ferina, 23 



Galapagos, avifauna of, 131 

 Gales and Storms, effects of sud- 

 den, 172, 173 

 Garriibis glajidarms, 1 1 7 

 Geese, spring migration of, 213 

 Geocichla sibirica, 179, 184 

 Geocichla varia, 179 

 Glacial Epoch, how initiated, 32 

 Glacial Epoch, the Post-Phocene, 



30 

 Glacial Epochs, 28 

 Glacial Epochs, causes of, 31 

 Glacial Periods, warm and cold 



33 

 Glacial Theory of Dispersal, Mr. 



Seebohm's, 49, 50 

 Glaciation, local effects of, on 



vertical Migration, 39 

 Glareola melanoptera, 1 5 5 

 Glareola ocularis, loi 

 Glareola orient alls, loi 

 Glaucus, 166 

 Glaiicus glaucus, 5 5 

 Glaucus leucopterus^ 55 

 Goldcrests, autumn migration of, 



256 

 Goldcrests, irruptions of, 115 

 Grinnell Land, arrival of migrants 



in, 216 

 Griis cijiej'ea, 2 1 1 

 Gr7is C077i77iu7iis. 56 

 Gulf Stream, influence of, on 



geographical distribution and 



migration of birds, 193 

 Gulls, nomadic movements of, 



Hcsmatopus, 49 

 HcE77iatopus ost7-alegus, 22,211 

 Hare I da glacial is, ijj 

 Harvie-Brown and Cordeaux, re- 

 searches of, 239 



