blue swallow perched on a marsh grass in the middle of the lake. sparrow-sized swallows are small songbirds the adult birds have

california oceano spring wildlife animal background barn swallow beak beautiful bird birdwatching blue branch brown bush bushtit coast ecology environment exotic feather grass green habitat lake landscape marsh national park natural nature people ornithology outdoors pacific ocean perching reserve shrub small songbird sparrow springtime tail travel tree usa wild wings perched middle lake sparrow-sized swallows songbirds adult birds dark metallic steel-blue appearance long streamers close-up portrait