Pileated vs. Ivory Billed Woodpeckers

There is some confusion of the Lord God Bird, the Ivory Billed Woodpecker that was thought extinct until the 1940s until 2004, with our local Pileated Woodpecker. They are similar colors and similar size:
Pileated WoodPecker
(Dryocopus pileatus)
Flying: Dark trailing wing edge
Perched: Small white patch
Length: 16-19 in.
Wing span: 26-30 in.
Ivory-billed Woodpecker
(Campephilus principalis)
Flying: White trailing wing edge
Perched: Large white patch
Length: 18-20 in.
Wing span: 30-33 in.
Above illustrations by N. John Schmitt © Cornell Lab of Ornithology

You can clearly see when this bird flew overhead it had a black trailing wing edge:


Pileated Woodpeckers, Lowndes County, Georgia.
Pictures by John S. Quarterman, 7 November 2011.

Also, the bird on the tree shows the small white patch of the Pileated.

Or, as the Pileateds like to say, “yucka yucka yucka!”

-jsq

PS: Wild turkeys (Meleagris gallopavo) can be more than twice as long as either of these birds. While I have seen them flying, I’ve never seen a turkey perching on the vertical side of a tree.