T. Richardson 1937 Western Joahawk (Aster strigipilus) June 11, 1937 - Nelson Creek Pb, Warner Mts., Oregon - A second specimen was collected today - a much larger bird (?) compared to the ♂ already collected. A noise of beating wing and breaking branches came 15 yards from camp, called my attention to the bird - apparently just after it had made an unsuccessful [illegible] for some bird or mammal. On seeing us it flew partly toward us up toward the top of a pine. This lack of wariness in relation to man shown in this bird and the collected ♂ may indicate a lack of contact with man or a temperament comparable to the white-tailed kite - something apart from the defense of a breeding territory. June 13, 1937 - 1 mi. S East Fork Paulina Mts., Oregon - The above specimen was prepared today. A comparison to the previously collected ♂ (A.H.M.) in certain respect, is of interest. Wt. ♀ 104.0 g ♂ 100+ Can this considerable sexual difference be correlated with life-history - perhaps best attempted in this species where sexual dimorphism is very marked? Does the ♀ have the "live share" in activity as nest building, feeding young, defending nest etc.? This color - ♀ browned ♂ yellowish red