Townsend’s Warbler, Arctic Blue-bird and Western Blue-bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.

Townsend’s Warbler, Arctic Blue-bird and Western Blue-bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.

Columbian Humming Bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.

Columbian Humming Bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.

Columbian Humming Bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.

Townsend’s Warbler, Arctic Blue-bird and Western Blue-bird from Birds of America (1827) by John James Audubon (1785 — 1851), etched by Robert Havell (1793 — 1878). Original from third party source. Digitally enhanced by rawpixel.