Beavers have resided in Willamette Wetlands much longer than Mary S Young Park. They’ve made substantial changes to the area which has increased habitat for birds – including bald eagles, blue herons, and red tail hawks, frogs, salamanders, coyotes, many plant species, and possibly salmon. The structural contents of the dam shown above means beaver are currently continuing upkeep. We believe this dam may have been built around 2009, although beaver structures are particularly ephemeral – they come and go frequently over time.