Invasion of Redpolls Sends Seeds Flying

Invasion of Redpolls Sends Seeds Flying

During “irruptions,” birders in New England can suddenly find their feeders clogged with redpolls from Canada and Alaska. People in the Lower 48 documented winter irruptions (“to increase rapidly or irregularly in number,” according to the American Heritage College Dictionary) of redpolls during 2008-2009 and 2012-2013.

Alaska’s Year Without a Summer

Alaska’s Year Without a Summer

Rosanne D’Arrigo of the tree-ring lab at Lamont-Doherty Earth Observatory in New York recently told the story of Alaska’s year without a summer. She attended the fall meeting of the American Geophysical Union last month in Washington, DC.