10 April 2009

A hole in a tree: who dunit?


I saw this peculiar tree hole last week. It was quite large, about 15 cm long. The relatively smooth edges and the roughly hexagonal shape made me think it was opened by a person. But I can't think of a function for such a hole.


You can see from the pictures that there was already a large cavity within the trunk of the tree. Now that there is an entrance, some animal will probably move in soon.


Kirk said...

I would say that is a hole that a Pileated Woodpecker (Dryocopus pileatus) has made. They excavate large holes into trees for insects. Usually carpenter ants or beetle larva.

xoggoth said...

Very neat hexagon for a woodpecker!

John said...

That looks like the work of a Pileated Woodpecker. It's probably not for nesting but for foraging. Their nest holes tend to have round rather than oblong entrances. Something else might move in once the woodpecker is done digging.

beetlesinthebush said...

Undoubtedly the pileated woodpecker - must have been a right juicy grub for it to excavate a hole that size.

Snail said...

My goodness, has that actually been excavated by a bird? Makes me (sort of) glad that we don't have woodpeckers here.