Aerodynamic barn swallows in flight over meadow at sunset, slowmo tracking

hirundo rustica barn swallows slowmo hirundo avian flying fast bird passerine birds fly speedy swallow passerine ornithology in flight passeriformes flight aerodynamic birdwatching slow motion feathered movement wildlife environment rural tracking field flying freedom wilderness bird watching wings graceful aves sunset hirundinidae sawwing animal meadow jetlike natural ecology outside nature chordata countryside wild elegant outdoors