Snags as Indicators of Habitat Suitability for Open Nesting Birds
نویسندگان
چکیده
--The habitat requirements of open nesting birds were examined in 19, five hectare, plots arranged along an altitudinal gradient in western Montana. Seven, mature forest birds were examined in detai 1. Percent shrub and low canopy cover {0.5-1.5m), mid-canopy cover {8-25m), and the number of large diameter stems {25-50 em dbh) were of major importance to this avian co11111unity. Increased avian diversity was associated with increased structural complexity of plots. Precise habitat recommendations for each species are proposed and related to more easily quantified snag variables. Management of western Montana forests to sustain production of 80 snags per hectare, preferably in a clumped distribution, will provide suitable habitat not only for cavity nesters, but also for sensitive open nesting species.
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