6db838fe_r___Cornell_Lab_of_Ornithology__0
[Pileated Woodpecker] Slow powerful accelerating drums that trails off at end. Usually 2-3 seconds in duration with 1-2 series per minute (listen). [Ivory-billed Woodpecker] Loud distinctive 'double-rap' with the second note sounding like an echo of the first. There is about 70 miliseconds between the two notes. [0] 
Display Drumming
W i n g s
P l u m a g e m a r k i n g s
B i l l
C r e s t
S i z e
V o c a l i z a t i o n s
D i s p l a y D r u m m i n g
R a n g e
Ivory-billed Woodpecker - Cornell Lab of Ornithology
0