Rare migrating Trumpeter Swans are often found on Quill Lakes during the month of May. During the peak of the shorebird migration – north in May and south in July – August, about 200 thousand individuals have been counted in a single day! During this time, several percent of the world populations of White-rumped, Baird’s, Least and Stilt Sandpipers occur here along with significant numbers of Hudsonian Godwits, dowitchers and American Avocets.