$135. Arcata, CA. Humboldt County has an incredible range of habitats and an impressive diversity of birds to go along with it. April promises a combination of residents, lingering winter birds, and breeders just arrived from the tropics. Join on an intermediate-advanced birding expedition, where Ken will point out visual and auditory field marks and discuss the birds’ natural history traits and habitat preferences. The class will focus on coastal and near-coastal habitats on the first day and inland/montane sites on the second; over 150 species are likely.