The New Encyclopaedia Britannica: Macropaedia : Knowledge in depth |
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Page 23
... breeding places and their feeding grounds . NATURAL HISTORY Reproduction . The breeding of pelecaniform birds is es- sentially restricted to places free of mammalian predators . Tropic birds , boobies , and frigate birds typically breed ...
... breeding places and their feeding grounds . NATURAL HISTORY Reproduction . The breeding of pelecaniform birds is es- sentially restricted to places free of mammalian predators . Tropic birds , boobies , and frigate birds typically breed ...
Page 25
... breeding . In a few species molt progresses concur- rently with breeding activities , but normally , a complete molt commences when breeding is over . In the anhingas the primary flight feathers of the wing are shed simultane- ously ...
... breeding . In a few species molt progresses concur- rently with breeding activities , but normally , a complete molt commences when breeding is over . In the anhingas the primary flight feathers of the wing are shed simultane- ously ...
Page 58
Breeding behaviour of the greenshank Breeding behaviour of herring gull and relatives Courtship feeding Breeding behaviour of terns Breeding behaviour of alcids. neck ( the " ruff " ) that are of different colours and patterns in ...
Breeding behaviour of the greenshank Breeding behaviour of herring gull and relatives Courtship feeding Breeding behaviour of terns Breeding behaviour of alcids. neck ( the " ruff " ) that are of different colours and patterns in ...
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20th century adult Africa anemia Anseriformes antibodies antigens areas Asia behaviour bill birds blood group bodhisattva body Bolivia bone boxing Brazil Brazilian breeding broadcasting bryophytes Buddha Buddhist building called Caprimulgiformes centimetres central centre China clotting colonial colour countries cuckoos cultural developed disease display early eggs electrons Eocene falconiforms Family feathers feeding feet female flight forest fossil frequency genera genus gruiform hemoglobin important incubation Indian insects islands known legs Mahāyāna major male marrow metres molt monks nest normal North America owls pair Pāli parrots passerines patterns pelecaniforms penguins percent perch period Piciformes pigeons plasma platelets plumage political population produced programs protein radio red cells region river São Paulo sexes short signal South species sporangium structure Suborder tail television Theravada tion tissue toes tradition trees tropical tube usually Vajrayāna wings woodpeckers World young