Tree pipit (Anthus trivialis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326117/free-illustration-image-von-wright-brothers-tree-birdFree Image from public domain licenseTree pipit (Anthus trivialis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325939/premium-illustration-psd-america-ancient-animalView license