Habitat
The gilded flicker most frequently builds its nest hole in a majestic saguaro cactus, excavating a nest hole nearer the top than the ground. The cactus defends itself against water loss into the cavity of the nesting hole by secreting sap that hardens into a waterproof structure that is known as a saguaro boot. Northern flickers, on the other hand, nest in riparian trees and very rarely inhabit saguaros. Gilded flickers occasionally hybridize with northern flickers in the narrow zones where their range and habitat overlap.References:
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