The 587-acre Mad River Slough Wildlife Area was formerly part of Arcata Bay's extensive intertidal salt marsh and mudflats. Old tidal sloughs still meander through the land, which is periodically flooded during periods of heavy rain. Egrets and herons are found here. Red-tailed and red-shouldered hawks, kestrels, harriers, kites, and osprey are all occasionally to commonly seen. The shorebirds commonly seen are dunlin, sandpiper, dowitcher, godwit, and willet among many others.
For more information, call the Northern Region Eureka office at (707) 445-6493.