. Agricultural zoology. Zoology. BIRDS. 53 Order : Raptores (Birds of Prey). Upper beak hooked, covered with a skin (cere) at its base; four toes possessing strong claws, and pro- vided with pads in their under side (Fig. 31); wings powerful. Birds of prey live in pairs, and breed once a year in nests composed of pieces of wood and branches. The young are nestlings (p. 51). Sight keen. These birds feed almost exclu- sively on vertebrates, principally mammals and birds. An idea of their food can be gained by examina- tion of their " pel- lets"—roundish baUs composed of the in- digesti
. Agricultural zoology. Zoology. BIRDS. 53 Order : Raptores (Birds of Prey). Upper beak hooked, covered with a skin (cere) at its base; four toes possessing strong claws, and pro- vided with pads in their under side (Fig. 31); wings powerful. Birds of prey live in pairs, and breed once a year in nests composed of pieces of wood and branches. The young are nestlings (p. 51). Sight keen. These birds feed almost exclu- sively on vertebrates, principally mammals and birds. An idea of their food can be gained by examina- tion of their " pel- lets"—roundish baUs composed of the in- digestible parts of their food, and dis- gorged from twelve to twenty hours after feeding. Two groups are distinguished— diurnal and nocturnal birds of prey. The first (Figs. 31, 32) have a laterally flattened head, eyes directed laterally, and tolerably stiff feathers. The nocturnal forms (" owls," Figs. 30, 33) have a large head, flattened in front, with large eyes facing to the front, soft plumage, and hair-like feathers on the toes, of which two are directed forwards, one backwards, and one outwards. The radiating feathers round the eye constitute a " ; Predominatingly harmful (from killing domestic mammals) are the following species occurring in Britain: the Sea Eagle (HaliaMtus albicilla), the Golden Eagle (Aquila cJirysaetus), the Peregrine Falcon (Falco peregrinus), the Merlin {F. OBsalon), the Hobby. Fig. 31.—Head and Foot of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bos, Jan Ritzema, 1850-1928; Ainsworth Davis, J. R. (James Richard), 1861-1934. London, Chapman & Hall, Ld.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1894
