The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 1997 |
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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 33
... breeding biology of a population . Only one species , the black - headed duck ( Heteronetta atricapilla ) of South America , is an obligate nest - parasite , always laying in the nests of other species . With few exceptions , only the ...
... breeding biology of a population . Only one species , the black - headed duck ( Heteronetta atricapilla ) of South America , is an obligate nest - parasite , always laying in the nests of other species . With few exceptions , only the ...
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19th century adult America anemia antibodies antigens Asia behaviour bill birds blood group bodhisattva body Bolivia bone Brazil Brazilian breeding broadcasting bryophytes Buddha Buddhist building called Caprimulgiformes centimetres central centre China clotting colonial colour countries cuckoos disease display early eggs electrons Eocene falconiforms Family feathers feeding feet female forest fossil frequency genera genus gruiform hemoglobin important incubation Indian insects islands known legs light Mahāyāna major male marrow metres molt monks nest normal North oilbird owls pair Pāli parrots passerines pattern pelecaniforms penguins percent perch period Piciformes pigeons plasma platelets plumage political population produced programs protein radio red cells region river São Paulo scanning sexes short signal South species sporangium structure Suborder surface tail television Theravada tion tissue toes tradition trees tropical tube usually Vajrayāna varies wings woodpeckers World young