Dunking behavior, the immersion of food items in water, is a relatively rare behavior in birds. I observed American Crows (Corvus brachyrhynchos) dunking several types of food in rain puddles at Mont-Royal Park, Montréal, Québec, Canada. Pieces of dry bread and unshelled peanuts were provided in two experiments to test the potential effects of item size (bread) and shell softening (peanuts) on crow behavior. Crows dunked large pieces of bread more often than small ones. Dunking unshelled peanuts did not speed up the opening process. These observations further support the suggestion that food dunking among birds facilitates food ingestion by softening large, hard items.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.