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040			_aEC-UrYT _cEC-UrYT
041			_aeng
082	0	4	_a598
100	1		_911695 _aWelty, Joel Carl
245	1	4	_aThe life of birds / _cJoel Carl Welty.
250			_aThird Edition
264	3	4	_aNew York : _bSaunders College , _c1982.
300			_axiv, 754 pages : _billustrations ; _c24 cm.
500			_aIncludes index (pages 717-754).
504			_aIncludes bibliographic reference (pages 652-716).
505	2		_a1 Birds as flying machines -- 2 The kinds of birds -- 3 Skin, scale, feathers, and colors -- 4 Bones and muscles -- 5 Brain, nerves, and sense organs -- 6 Food, digestion and feeding habits -- 7 Blood, air, and heat -- 8 Excretion, reproduction, and photoperiodism -- 9 Behavior -- 10 Social behavior -- 11 Songs, calls, and other sounds -- 12 Territory -- 13 Courtship and mating habits -- 14 Nests -- 15 Eggs -- 16 Incubation and brood parasitism -- 17 The care and development of young -- 18 The numbers of birds and their regulation -- 19 The ecology of birds -- 20 The geography of birds -- 21 Flight -- 22 Migration and orientation -- 23 The origin and evolution of birds -- 24 Birds and man.
650	2	4	_980 _aBirds
650	2	4	_92507 _aAves
942			_2ddc _cLIBRO