If scientists have found out that a typical owl regurgitates two pellets per day, how many rodents might an owl eat each day? (Hint: remember how many skulls ...
www.caosclub.org/nsw/funstuff/dissect.html

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Note added at 2002-10-25 08:07:27 (GMT)
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another term is BOLUS:

\"PELLETS Many birds produce a bolus (mass) of undigested parts of the bird\'s food, consisting of feathers, hair, fur, bones, bills, claws, teeth, insect exoskeleton, and indigestible parts of plants. The vulture regurgi-tates and vomits the pellets which then drop to the ground. Pellets can be found under a roost where the white stains of droppings are seen. The mean width and length in one study were 2.4 by 4.3 cm. (0.94 by 1.7 inches). Pellets may be gray or brown, and are oval in shape. An analysis of the contents of of pellets over a period of time will give accurate information about the seasonal food habits of a bird.\" [http://www.accutek.com/vulture/newslett.htm]

collected her bolus (or pellets), the undigested parts that the bird regurgitates... [http://www.afga.org/OGC/nwslttr.htm]

The parent bird compresses multiple insects into tight bolus ... The bolus is placed directly into nestlings\' mouths ... Diet. A. Major food items. Stomach contents of ...
[www.prbo.org/calpif/htmldocs/species/ riparian/bansacct.html]