Hermit warblers are birds of northwestern forests that pass through California on migration.   I photographed these at Crane Flat, in Yosemite National Park, California and in Riverside, CA, on migration).   Breeding-plumage males have a brilliant yellow face and crown, with a black rim and throat.   More photos of this species are here.

• Canon 1D Mk. II, 1D4, or 7D2; 500 mm f4 IS lens plus 2X converter or 800 mm IS lens plus 1.4X converter, fill-in flash (2005, 2012, 2016-2018)