Among the first groups of birds to move north in the spring are waterfowl. Many ducks, geese, and swans begin migrating as soon as frozen lakes and marshes start to thaw. Although an occasional Wood Duck is spotted in northern New England during the colder months, most winter further south (band recoveries indicate that in eastern U.S. about one-third of Wood Ducks are permanent residents and the others are migratory). They begin to be seen in open water in February and March but it is April before their numbers really swell, and sometimes it seems that on every stream and in every flooded field you can find at least one pair. With their distinctive plumage, it’s hard to miss them, especially the males. Soon they will be seeking out natural cavities in trees, including Pileated Woodpecker holes, in which to nest.
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