Red warbler (Acrocephalus streperus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325626/free-illustration-image-von-wright-brothers-acrocephalus-animalsFree Image from public domain licenseSedge warbler (Acrocephalus schoenobaenus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325930/premium-illustration-psd-von-wright-brothers-acrocephalus-schoenobaenus-americaView licenseSedge warbler (Acrocephalus schoenobaenus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325670/free-illustration-image-von-wright-brothers-wright-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/325640/free-illustration-image-von-wright-brothers-animals-birdFree Image from public domain licenseRed warbler bird png hand drawn https://www.rawpixel.com/image/2634518/free-illustration-png-von-wright-brothers-acrocephalus-streperusView licenseLong-billed Reed Warbler (Acrocephalus longirostris) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/321411/free-illustration-image-reed-birds-australiaFree Image from public domain licenseRed warbler (Acrocephalus streperus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325867/premium-illustration-psd-abstract-acrocephalus-streperus-americaView 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 licenseReed Warbler (Acrocephalus Australis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321462/free-illustration-image-reed-warbler-vintage-animalFree Image from public domain licenseSedge warbler bird png hand drawn https://www.rawpixel.com/image/2627933/free-illustration-png-vintage-birds-bird-animalsView licenseAquatic warbler bird png hand drawn https://www.rawpixel.com/image/2627943/free-illustration-png-von-wright-brothers-vintage-birdView license