Building Artificial Sites (Mitigation)
Artificial nest sites are built to enhance the population so falcons that nest on cliffs. A limiting factor is lack of suitable nesting sites so we build them where no suitable nest sites exist.
In the case of the Oldman and Pine Coulee
Dams there was to be no net loss of habitat or species after the flooding of the dams so artificial sites were added to keep breeding pairs in the area. This is called mitigation. More than half the sites used by prairie falcons on the Oldman Dam are artificial sites.
Some examples are shown below.
The first row is a site built using a natural ledge, fixing it up and adding dirt so the birds can build a scrape for the eggs as the birds do not build a nest. As show this and the other sites that John is building or have young have all been used. John uses a hammer drill to make holes in the cliffs as required.