We analyzed attributes from 23 nests (10 renests) and 46 brood locations of radio-marked Chukars (Alectoris chukar) in the lower Salmon River canyon of west central Idaho in 1995 and 1996. Nesting effort was 100%, apparent nest success was 45%, and estimated time from destruction or abandonment of a nest to initiation of laying a subsequent nest averaged 13 Â± 5 days sx. Average clutch size for 1st nests (14.5 Â± 1.0) was greater (P = 0.017) than renests (10.4 Â± 1.1). Cover types used by nesting Chukars included grass/forb (48% of nests), rock (43%), and shrub (9%), whereas the most common structure used for nests was rock outcrop (57%). Chukars did not use yellow starthistle (Centaurea solstitialis) habitats differently from what was expected (P = 0.08) for nesting, but birds with broods selected areas with less starthistle (P < 0.001). Chukar broods, which averaged 12.0 Â± 1.1 chicks, used shrub and grass/forb cover types approximately equally (43% and 47% of locations, respectively) but rock habitats infrequently (11%).
Lindbloom, Andrew J.; Reese, Kerry P.; and Zager, Peter
"Nesting and brood-rearing characteristics of Chukars in west central Idaho,"
Western North American Naturalist: Vol. 63
, Article 3.
Available at: http://scholarsarchive.byu.edu/wnan/vol63/iss4/3