Barn Swallow male (Chelidon rustica) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326178/premium-illustration-psd-swallow-barn-von-wright-brothersView licenseBarn Swallow male (Chelidon rustica) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326132/free-illustration-image-swallow-barn-birdsFree Image from public domain license