...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」
...Inthe study here reported upon, the yearly diet was computed by averagingthe percentages of each item determined for each biweekly period...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...The percentages are weighted toward the food items taken in summer andautumn, since many biweekly periods in late winter and early spring arenot represented...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
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