The California Bird Records Committee reached decisions on 184 records involving 176 individuals of 71 species and two species groups documented since the 39th report (Rottenborn et al. 2016), endorsing 152 records of 146 individuals. First accepted state records of the Salvin’s Albatross (Thalassarche salvini) and Chatham Albatross (T. eremita) outlined in this report bring California’s total list of accepted species to 660, 11 of which are established introductions. Other notable records detailed in this report include the return for a third winter of the state’s first Gray Hawk (Buteo plagiatus), its second Nazca Booby (Sula granti), second Marsh Sandpiper (Tringa stagnatilis), second Olive-backed Pipit (Anthus hodgsoni), and second and third Blue-throated Hummingbirds (Lampornis clemenciae).