Abstract
We examined the fruit species eaten by crows Corvus corone & C. macrorhynchos by analysing the faeces and probably regurgitated seeds collected at the pre-roosting sites in winter. Of the seeds identified, ca. 66% were seeds of dry fruits consisted of almost all the smacs Rhus spp. in the samples. The smacs include plenty of fat in the pulp. Its nutrition value seems very high under shortage of animal foods in winter. This is the reason why crows are especially fond of smacs.
