On May 21, 2013, at 5:15 PM, John D <[email protected]> wrote:

> My bird app sez:  "When a pair of Gila Woodpeckers excavates a nest hole in a 
> saguaro cactus, it typically does not use it for several months.  Drying time 
> is required for the inner pulp of the cactus to form a solid casing around 
> the cavity."

Yes, up to a year; the cactus actually forms a kind of 'scar tissue' around it.

This is one checking out a 'move-in ready' hole, from last year 

<http://www.flickr.com/photos/35245797@N00/7210456378/in/set-72157629758097214>


-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs


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