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 | Old Scout is on the right trackby (Login thebotanyguy) |
"Nest prey items.--During the nesting season, food records were obtained by daily visits to the nests containing young hawks. Prey found in the nests provides an index to the feeding during that season although certain very large items and very small ones may not be brought to the nest even when they are secured. Most adult ground squirrels, for instance, are extremely fat in late spring, so that one may even weigh as much as an adult hawk and could not be lifted from the ground by the bird, much less carried to the nest. Adult cottontails are even heavier and are not represented among the nest items, but such large prey may be secured and fed upon by the adult hawks during the nesting season, as at other times of year. Insects and other very small prey found in the pellets have not been found in the nests, but since they are bolted entire, no trace would remain."
Fitch, H. S., F. Swenson, and D. F. Tillotson. 1946. Behavior and Food Habits of the Red-Tailed Hawk. The Condor, Vol. 48, No. 5 (Sep. - Oct., 1946), pp. 205-237.
So the short answer to your question is that anything more that a fat ground squirrel, i.e. more than a pound, cannot be lifted by a Red-Tailed Hawk.
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Manypeeplia upsidownia
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