Species and illustrations

Featherframe never shows the wrong bird. If it isn't sure of a match, it shows the species' name instead.

Audubon's illustrations

Audubon's The Birds of America was printed as 435 numbered sheets, called plates. server/scripts/folios/havell.yaml matches modern species names to those numbers. It includes every species Audubon painted. Each match was checked against the name printed on the illustration, because Audubon's names are often different. For example, the Northern Cardinal is his "Cardinal Grosbeak."

Some illustrations show more than one species. Featherframe always shows these whole.

Other books

Each book has its own file in server/scripts/folios/. Featherframe checks the book for your Region first. If a species isn't there, it checks the others.

Book	File	Region
Audubon, The Birds of America (1827–1838)	havell.yaml	North America
John Gould, The Birds of Europe (1832–1837)	gould_europe.yaml	Europe
John Gould, The Birds of Australia (1840–1869)	gould_australia.yaml	Australia
John Gould, The Birds of Asia (1850–1883)	gould_asia.yaml	Asia
John Gould, The Birds of Great Britain (1862–1873)	gould_britain.yaml	Europe

The Birds of Great Britain adds only the seven species Gould's Europe doesn't have.

An illustration is added only after the name printed on it has been checked. Many of the old names now belong to a different species. For example, Gould's "Laughing Gull" is today's Black-headed Gull.

Every match, with its sources, is also published as open data in wr/historical-bird-plates.

Species with no illustration

Some species aren't in any book, like the Veery, bats, and cicadas. They get a name card: their name set in type, and the date they were first recorded. With an OpenAI key, Featherframe can generate an AI illustration instead.