Blue Crane or Heron from Birds of America (1827) by John James Audubon (1785 - 1851), etched by Robert Havell (1793 - 1878).… Free Image from public domain license 
A traditional portrait of a beautiful Japanese crane by Kano Motonobu (1476-1559). Digitally enhanced from our own antique… Free Image from public domain license 
An illustration from a book of American Nature Literature and Illustration by Alexander Wilson (1843), a handcolored wood… Free Image from public domain license 
Two cranes (1925 - 1936) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Cock illustrated by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own 1892 edition of Dictionnaire… Free Image from public domain license 
Miss Crane Birds by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
A Perch of Birds (1880) by Hector Giacomelli (1822-1904). Digitally enhanced from our own original plate. Free Image from public domain license 
Louisiana Heron from Birds of America (1827) by John James Audubon (1785 - 1851), etched by Robert Havell (1793 - 1878). The… Free Image from public domain license