Compared to the Pileated Woodpecker's length of 16 to 19 inches, how long did the Ivory-billed Woodpecker potentially grow?
Answer
Near 20 inches, potentially boasting a wingspan up to 30 inches
The Ivory-bill was substantially larger than the Pileated; its body length approached 20 inches, and its wingspan could reach as much as 30 inches.

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