Oshkosh DNR Report - May 19th, 2011
With the nice weather on Monday and Tuesday many warblers were passing through, especially along the Fox River in the Fox Cities. Bob-o-links in more numbers are arriving on their breeding grounds in Calumet County. Both ducks and geese are bringing off broods, which so far have been small due to the cold wet weather. Assume many were impacted by the last snow and its weather related impacts on cooling the eggs and the female trying to sustain warmth for herself. Cavity nesters such as purple martins have not done so well. A fair number of adults have died from starvation as seen from local colonies on the north end of Lake Winnebago. They are dependent on flying insects. Cool weather below 50 degrees has restricted their prey and delayed nest construction and nesting by as must as ten days.
(courtesy of Wis DNR)
