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METHODS OF STUDY
ATTENTIVE BEHAVIOR OF THE HOUSE WREN
ATTENTIVE BEHAVIOR OF MISCELLANEOUS SPECIES
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14 days air temperature altricial attentive and inattentive attentive behavior attentive periods Barn swallow behavior pattern Beobachtungen Bird-Banding breeding British Birds brooding the young Brutbiologie Charadriiformes Condor Corvidae Cuculiformes curve daily rhythm days old decrease Diomedeidae egg-laying eggs eggs are laid Family feeding rate feeding the young feeds the female female incubates Fortpfl.-biol house wren Ibid increase incubating bird incubating female incubation begins incubation period intervals itograph Jour July June June 20 last egg leave the nest length male and female male feeds Moreau nest building nesting behavior nesting duties nesting habits nestling period Niethammer night number of attentive number of periods number of trips observations Ornith parents Passeriformes periods per day Piciformes rate of feeding records sexes share six eggs Skutch song sparrow sparrow species Steinfatt subfamily Suborder sunset Table thermocouple tive periods usually warbler weeks Wilson Bull Witherby young bird