Special Scientific Report--Wildlife 205
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In our eReader you can find the full English version of the book. Read Special Scientific Report--Wildlife 205 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Special Scientific Report--Wildlife 205
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This number was greater than that for the sagebrush grid (27), but below the number for juniper (36).
Trees in the ponderosa type were generally well spaced and offered good watch-perches for flycatchers and other birds. These perches were higher above ground than those on the juniper grid and the feeding birds did not seem to drop to the ground so often for food. Dead and spike-topped trees were relatively scarce, but many contained a few to many holes made by woodpeckers. The ponderosa pine t...rees bear irregular crops of seed (Dahms and Barrett 1975) which, when available, are very attractive to some of the more erratic species, such as the red crossbills and evening grosbeaks. Shrub cover was spotty, and herbaceous cover was so sparse it was probably of little importance to the birdlife.
In a ponderosa pine community in southeastern Arizona, Balda (1969) found 336 breeding bird territories per 40.5 ha. This is 63, 37, and 41% greater than the three yearly population estimates of this present study.
What to read after Special Scientific Report--Wildlife 205?
You can find similar books in the "Read Also" column, or choose other free books by U.S. Fish And Wildlife Service to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This number was greater than that for the sagebrush grid (27), but below the number for juniper (36).
Trees in the ponderosa type were generally well spaced and offered good watch-perches for flycatchers and other birds. These perches were higher above ground than those on the juniper grid and the feeding birds did not seem to drop to the ground so often for food. Dead and spike-topped trees were relatively scarce, but many contained a few to many holes made by woodpeckers. The ponderosa pine t...rees bear irregular crops of seed (Dahms and Barrett 1975) which, when available, are very attractive to some of the more erratic species, such as the red crossbills and evening grosbeaks. Shrub cover was spotty, and herbaceous cover was so sparse it was probably of little importance to the birdlife.
In a ponderosa pine community in southeastern Arizona, Balda (1969) found 336 breeding bird territories per 40.5 ha. This is 63, 37, and 41% greater than the three yearly population estimates of this present study.
What to read after Special Scientific Report--Wildlife 205?
You can find similar books in the "Read Also" column, or choose other free books by U.S. Fish And Wildlife Service to read onlineMoreLess
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