| | Faces page |
| A pair of Lesser Spotted Woodpeckers attacking a Great
Spotted Woodpecker | [Frontispiece] |
| Territorial flight of the Black-tailed Godwit | [54] |
| Competition for territory is seldom more severe than
individual Razorbills to secure positions on the
among cliff-breeding seabirds, and the efforts of
crowded ledges lead to desperate struggles | [64] |
| Male Blackbirds fighting for the possession of territory.
The bare skin on the crown of the defeated bird shows
the nature of the injuries from which it succumbed. | [74] |
| Male Cuckoos fighting before the arrival of a female | [82] |
| Two pairs of Pied Wagtails fighting in defence of their
territories | [86] |
| Long-tailed Tit: males fighting for the possession of
territory. The feathers have been torn from the crown
of the defeated and dying rival | [96] |
| A battle between two pairs of Jays | [106] |
| The Female Chaffinch shares in the defence of the territory
and attacks other females | [110] |
| Peregrine Falcon attacking a Raven | [216] |
| A battle between a pair of Green Woodpeckers and a
Great Spotted Woodpecker for the possession of a hole
in an oak-tree | [238] |
| Raven | Corvus corax. |
| Carrion-Crow | Corvus corone. |
| Hooded Crow | Corvus cornix. |
| Rook | Corvus frugilegus. |
| Magpie | Pica pica. |
| Jay | Garrulus glandarius rufitergum. |
| Chough | Pyrrhocorax pyrrhocorax. |
| Starling | Sturnus vulgaris. |
| Greenfinch | Chloris chloris. |
| Hawfinch | Coccothraustes coccothraustes. |
| House-Sparrow | Passer domesticus. |
| Chaffinch | Fringilla cœlebs. |
| Brambling | Fringilla montifringilla. |
|
Linnet | Acanthis cannabina. |
|
Corn-Bunting | Emberiza calandra. |
|
Yellow Bunting | Emberiza citrinella. |
|
Cirl Bunting | Emberiza cirlus. |
|
Reed-Bunting | Emberiza schœniclus. |
|
Sky-Lark | Alauda arvensis. |
|
Pied Wagtail | Motacilla lugubris. |
|
Tree-Pipit | Anthus trivialis. |
|
Meadow-Pipit | Anthus pratensis. |
|
Great Titmouse | Parus major newtoni. |
|
Blue Titmouse | Parus cœruleus obscurus. |
|
Long-tailed Titmouse | Ægithalus caudatus roseus. |
|
Red-backed Shrike | Lanius collurio. |
|
Whitethroat | Sylvia communis. |
|
Lesser Whitethroat | Sylvia curruca. |
|
Blackcap | Sylvia atricapilla. |
|
Grasshopper-Warbler | Locustella nœvia. |
|
Savi's Warbler | Locustella luscinioides. |
|
Reed-Warbler | Acrocephalus scirpaceus. |
|
Marsh-Warbler | Acrocephalus palustris. |
|
Sedge-Warbler | Acrocephalus schœnobænus. |
|
Willow-Warbler | Phylloscopus trochilus. |
|
Wood-Warbler | Phylloscopus sibilatrix. |
|
Chiffchaff | Phylloscopus collybita. |
|
Song-Thrush | Turdus musicus clarkii. |
|
Redwing | Turdus iliacus. |
|
Blackbird | Turdus merula. |
|
Redstart | Phœnicurus phœnicurus. |
|
Redbreast | Erithacus rubecula melophilus. |
|
Nightingale | Luscinia megarhyncha. |
|
Stonechat | Saxicola rubicola. |
|
Whinchat | Saxicola rubetra. |
|
Wheatear | Œnanthe œnanthe. |
|
Hedge-Sparrow | Accentor modularis. |
|
Wren | Troglodytes troglodytes. |
|
Spotted Flycatcher | Muscicapa striata. |
|
Swallow | Hirundo rustica. |
|
Martin | Delichon urbica. |
|
Sand-Martin | Riparia riparia. |
|
Great Spotted Woodpecker | Dryobates major anglicus. |
|
Lesser Spotted Woodpecker | Dryobates minor. |
|
Green Woodpecker | Picus viridis. |
|
Cuckoo | Cuculus canorus. |
|
Tawny Owl | Strix aluco. |
|
Buzzard | Buteo buteo. |
|
Sparrow-Hawk | Accipiter nisus. |
|
Peregrine Falcon | Falco peregrinus. |
|
Merlin | Falco æsalon. |
|
Kestrel | Falco tinnunculus. |
|
Shag | Phalacrocorax graculus. |
|
Wild Duck | Anas boschas. |
|
Snipe | Gallinago gallinago. |
|
Dunlin | Tringa alpina. |
|
Ruff | Machetes pugnax. |
|
Redshank | Totanus totanus. |
|
Black-tailed Godwit | Limosa limosa. |
|
Curlew | Numenius arquata. |
|
Whimbrel | Numenius phæopus. |
|
American Golden Plover | Charadrius dominicus. |
|
Lapwing | Vanellus vanellus. |
|
Oyster-Catcher | Hæmatopus ostralegus. |
|
Herring-Gull | Larus argentatus. |
|
Kittiwake | Rissa tridactyla. |
|
Razorbill | Alca torda. |
|
Guillemot | Uria troille. |
|
Puffin | Fratercula arctica. |
|
Fulmar | Fulmarus glacialis. |
|
Water-Rail | Rallus aquaticus. |
|
Corn-Crake | Crex crex. |
|
Moor-Hen | Gallinula chloropus. |
|
Coot | Fulica atra. |
|
Wood-Pigeon | Columba palumbus. |
|
Turtle-Dove | Streptopelia turtur. |
|
Partridge | Perdix perdix. |
|
Black Grouse | Lyrurus tetrix britannicus. |
| Red Grouse | Lagopus scoticus. |