Fig. 3From: Breeding strategies of open-cup-nesting birds in sub-Antarctic forests of Navarino Island, ChileSubstrates used for nesting by five open-cup forest-nesting passerines that breed on Navarino Island (55°S), Cape Horn Biosphere Reserve, Chile. Sample sizes are in parentheses. Bs represents the standardized Levins’ niche breadth indexBack to article page