Printed on the plate
“Bimaculated Teal”
Querquedula glocitans
Engraved caption: Bimaculated Teal Anas glocitans (Pall.); Querquedula glocitans (Vigors)
This identification is still open; the reasoning below says what would settle it. If you can, open an issue with the evidence.
Modern identification
Not identified
Why
Gould's Bimaculated Teal is the Vigors pair taken in an English decoy in 1812, the British 'Bimaculated Duck', a hybrid (Teal x Mallard or Teal x Wigeon), not Pallas's Baikal Teal; Salvadori lists the plate among the Common Teal's hybrids. The male's green head with two brown blotches, black-spotted chestnut breast and grey vermiculated flanks have nothing of the Baikal Teal's face pattern. No single species to name.
Sources
General List (vol. I); engraved caption; Gould's text; Salvadori, Cat. Birds BM xxvii; the plate
Who made the plate
Drawn from Nature & on stone by J. & E. Gould.Printed by C. Hullmandel.
- John Gould drew and lithographed
- Elizabeth Gould drew and lithographed
- Charles Joseph Hullmandel printed
As the credit line gives it. More on who made these plates.