Aquatic warbler (Acrocephalus aquaticus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325640/free-illustration-image-von-wright-brothers-animals-birdFree Image from public domain licenseAquatic warbler (Acrocephalus aquaticus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325896/premium-illustration-psd-von-wright-brothers-acrocephalus-aquaticus-americaView license