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1 October 2010 Clark's Nutcrackers Harvest Sugar Pine Seeds from Cones
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Abstract

This is the first report of Clark's Nutcrackers (Nucifraga columbiana) harvesting seeds from the cones of sugar pine (Pinus lambertiana), based on observations over several years in Crater Lake National Park, Oregon. The harvesting period in late September corresponded to peak cone-opening dates. Nutcrackers placed harvested seeds in their throat pouches, a behavior associated with seed caching.

© 2010
Michael P. Murray and Diana F. Tomback "Clark's Nutcrackers Harvest Sugar Pine Seeds from Cones," Western North American Naturalist 70(3), 413-414, (1 October 2010). https://doi.org/10.3398/064.070.0314
Received: 15 December 2009; Accepted: 1 May 2010; Published: 1 October 2010
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