It isn't often that I see a porcupine descend (or even ascend) a tree but every time is as exciting & nail biting as the first.
Any noise (and that can include the click from the camera shutter) or slight movement can send a porcupine back up the tree. They don't see very well but their hearing and sense of smell are both acute. And that can mean a very long silent wait for another potential descent.
Then if you add in early evening light (and not dusk) and a clear view of the tree & the climber, it doesn't get more perfect to document the event.
PHOTO #1
Porcupine - North American"STEP BY STEP, PAW BY PAW, CLAW BY CLAW"
PHOTO #2
Porcupine - North American"LONG WAY DOWN"
PHOTO #3
Porcupine - North American"DON'T LOOK DOWN, DON'T LOOK DOWN"
PHOTO #4
Porcupine - North American"CHECKING FOR AN ALL CLEAR"
PHOTO #5
Porcupine - North American"HOMEWARD BOUND"