barn swallow perching on a marsh grass in the middle of the lake. sparrow-sized swallows, adults are brightly marked in deep blue

california oceano spring wildlife animal background barn swallow beak beautiful bird birdwatching branch brown bush bushtit coast ecology environment exotic feather grass green habitat lake landscape marsh marshland national park natural nature people ornithology outdoors pacific ocean perching reserve shrub small songbird sparrow springtime tail travel tree usa wild wings middle lake sparrow-sized swallows adults brightly marked deep blue rusty cinnamon close-up