Welcome to the West Sister Island Rookery
FACTS ABOUT WEST SISTER NATIONAL WILDLIFE REFUGE: 
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Species that nest on West Sister Island include great blue herons, great egrets, black-crowned night herons, snowy egrets, double-crested cormorants, and sometimes even cattle egrets or little blue herons! The wading birds that nest on West Sister Island are quite incredible. The water right around the island is too deep for the birds to feed, so they must travel to the mainland marshes at Ottawa National Wildlife Refuge to hunt for food to feed their young, an 18 mile round trip!
There is also an active bald eagle nest on the south side of the island. While there is no public access on the island to protect this important nesting area, you can see the island up close on our West Sister Island Cruise in May. Here's some data for the minimum and maximum nest counts for each bird species from 1991-2019.
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