Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Marshall, 1938
Otus flammeolus
Meadows Flat, June 12.
comer ( third male heard). It stayed higher in the now dense stand young conifers (similar to terr. #430) and was not seen although it answered my hoots at intervals.Again other faint higher sounds were heard nearby,& attributed to another female.Another supposedly a male was heard at this time back in terr. of #431 & & was probably the one heard several times from that area on my way back to the meadows.I paced off the distances involved & determined that these four males & the two supposed possibly to be females were all within an area 250 by 100 yd. Thus for this uniform and dense young forest or conifers with its occasional black oaks, we have the densest owl population yet recorded in my observations. It may well be possible that there are no Spotted Owls or other owls which might prey upon the Screech @wls in this locality & that this may be a factor which determines their abundance because I have as yet found none at all within the large terr. of Strix occidentalis on the entire E,S,&W sides of Whitakers Camp. Although terr. set up , apparently no objection to invasion occasionally by others. Territoriality may be restricted to the sequestration involving merely convenience &-set in foraging & not aggressive maintenance of boundaries.
Later,bright moonlight,5th male heard in tall yellow pine at edge meadows.Usual behavior resulting from my imitated hoots: ab first kept on hooting steadily from high in tree & out of sight,gradually interested in my hoots,and began to move from perch to perch about me - still high.Then when I began to move about within its terr.,became curious (or desirous of driving away a supposed invader) & descended to lower sm. trees where seen at close range.After 4 hr., began to lose interest & moved again to high p perches.Drawn down from these by my withdrawal to grove sm. trees & its following me thence. Called eagerly for 15 min. from open perch on horiz.stub of lg.,dead tree,only 7 ft. from gnd.