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More irruptions from the North: Common redpolls

December 29, 2012
By Ann Beebe , The Post-Journal

The common redpoll is irrupting again. This is because it's partial to seeds - especially from coniferous trees. It feeds on the seeds of evergreen trees from the very northern part of the United States and the southern provinces of Canada, but not into the tundra. If those areas are short on cones, then the birds move south to where there is more food. However, usually not below the 40th parallel.



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