Terry McNeely emailed that in failing light, at a distance this afternoon, he saw what he believes to be 4 adult and 2 imm. Trumpeter Swans. He was at the west end, from which access to the north side and east end is blocked.
To see the swans, try the first part of the directions below; to see most of the lake, use the directions in the second paragraph. These directions are on the ASM website in the BIRDERS' GUOIDE entry for Binder Lake. Look under Birder Tools in the banner head for this and other site descriptions.
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ASM Spring Meeting: May 2-4, 2014 in Jefferson City Details and Online Registration