...for 72 hours, and the tissue residues removed bycentrifugation in a refrigerated centrifuge... 
William B. Stallcup 「Myology and Serology of the Avian Family Fringillidae」
...Thepercentages by bulk of different food residues (excluding sand and otherextraneous material) were estimated in each pellet and recorded...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Data obtained from the analysis of pellets were grouped in biweeklycollections, and percentages of various food residues in the pelletscollected within each biweekly period were averaged...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Certain foods that lack hardparts may leave no recognizable residues in pellets...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Nevertheless, grasshoppers and beetles remained the predominantanimal-food residues into December and frequencies of occurrenceremained relatively high...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Wheat and sorghum constitutedmore than one-half of the food residues in this period...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...In my samples, plant material amounted to 69 per cent of theindigestible residues...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...Percentages of the chief items in the total food residues,and (in parentheses) number of sampling periods in whicheach item was represented, are shown in the following list:wheat 23...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...These percentages were probably high, since there is a highproportion of indigestible residues in oats...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...2 per cent of the residues...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...It was reported to me that crows caused damage to watermelons which areextensively grown in the sandhills region but no residues of this cropwere found in any pellets collected...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...2 per cent of the yearly food residues...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...0 per cent of the pellet residues...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...It would be out of place, despite its importance, to pursue theproblem of the uric residues any further...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
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