18 November 2020
It didn’t rain much last July but when it did I noticed something puzzling on the Pitt peregrine falconcam(*). The nest was getting wet where it ought to be dry. Was the roof leaking?
A week ago the problem became acute when it rained hard all day on 11 November. By the end of the day pieces of brown debris were on the nest surface, probably from the roof. Now the rain really gets in!
If you look closely at falconcam still photos you can see papery pieces of roof hanging from above, erosion in the right corner where the rain drips, and debris from the roof on the nest surface.
Though we can’t see the roof from either camera, a snapshot of the awning gives us a hint of the roof’s condition. The red circle shows a place that lost its waterproof coating, exposing the under layer. The awning is deteriorating too, though more slowly.
The nestbox was built and installed in late 2007 (or early January 2008) after the Cathedral of Learning was spray-washed. I believe the box and walls are made of solid plastic but the roof and awning appear to be a composite material that has been weathering for 13 years.
This fall we’ll arrange for repairs so the nestbox is in good condition for the 2021 nesting season. Like maintaining a very small home, repairs are inevitable.
(*) Streaming of the Pitt peregrine falconcam is seasonal. It ended for the year on 31 July 2020.