Egrets on Bolinas Lagoon had a tough nesting season, with nesting down compared to last year and only half of nests successfully fledging checks, said Scott Jennings, an avian ecologist for Audubon Canyon Ranch, a nonprofit that monitors great blue heron and egret nesting in the area. Since 2014, egret nests have fallen from 34 nests to just 17 . . .

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