The lines are moving insects. The night I snapped this pic it was pitch black and hundreds of insects were swarming around my headlamp. So I took their picture! Inevitably I swallowed a tiny one. Another flew in my ear. The insectivore that night was me. Pacaya-Samiria Reserve, Loreto, Peru.
A native plant garden feeds birds in more ways than one. American Goldfinches flock to a patch of a native daisy called cup plant. Pictured eating the seeds (plant: "Silphium perfoliatum": Asteraceae).