The goal of the Nest Site Research Project continues to be the creation of a small, affordable and safe nesting structure for Chimney Swifts.  Swifts continue to use structures at least 11'' x 11" x 8', however, these towers often fail to provide conditions suitable for the successful fledging of offspring.   The Prism, which is a triangular tower 22" on each side and 8' tall, has been very successful, however, construction of this design is a bit of a challenge.  Our newest attempt is an 8' tower with inside dimensions of 14 5/8" x 14 5/8".  Two towers of this size were constructed 10 feet apart.  One tower (East) was fitted with rigid insulation between the inside and outside walls.  The West Tower contained only an air space.  Both towers were painted white for the highest possibility of reflecting heat.  A cap was installed on the top with an 6" x 11" access hole cut into the north edge to prevent deep penetration by the suns rays. 
Both towers attracted swifts and "test" sticks were found glued inside each structure on June 4.  The East Tower was soon abandoned but construction continued in the West Tower.  Three eggs were in the nest on June 25, however, on July 2 only 1 adult was observed entering the tower.  No diurnal brooding was evident and the tower was abandoned by July 13.  The interior of the tower was inspected on August 27.  Broken eggshell and mummified hatchlings were discovered at that time.
   

We are in the process of fencing the perimeter of the property encompassing the canyon.  Our hope is to install swift towers every 60 feet along the east and west sections which are bordered by pavement.  These towers will be constructed of cinderblock or other masonry products.  The first of these towers was begun on May 20 with the pouring of a concrete pad.  16" x 16" x 8" x 2" pilasters were dry stacked onto the pad and monitored for interior temperature variations.  By April 15, it was determined that the pilasters offered no moderation from the ambient temperature and were removed.  Pre-construction involved using 8" x 4" x 16" cinderblocks and topped with a unique pyramid shaped concrete block top with a triangular opening on the north side.  The 10 ½' tall structure was completed on July 8 but failed to attract residents.  This tower is 26 feet from the castle.

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