Female Pileated Woodpecker Working On Dead Walnut Tree

Female Pileated Woodpecker working hard on a dead black walnut tree. I kept hearing something 'knocking', so I went looking for it and found this Pileated Woodpecker working this tree over! She was pecking away at it for nearly an hour before she moved on. The males have a red streak on their lower jaw line, where as the females have a black streak. I slowed it down at about 1 minute and 24 seconds to show it chiseling the wood away a little better.