hago pur logopus -2 23 May Heade River Coal Mine, 157°25'W, 70°24'N, Alaska yellow beds and green leaves, prob. Ledum Dryas and Vaccinium; the bud eating is evident from examination of the bushes here, which are all stripped clean. The molt is dimorphic, the ♂s further along than the ♀s. See catalogue for these 4 breeds. Ray later shot 4 others, which I weighed and checked for molt only 8 ♂, 622 gm., heavy molt head and neck, moderate molt scapular tract, body + wing - no molt; ♂, 614 gm.; molt as above; ♀, 340 gm., mod molt (short feathers), scapular + upper tail coverts, heavy molt head and neck; ♀, 526 gm., heavy molt (large feathers) head and neck (small feathers) vertebral back + upper tail coverts; mod. molt scapular tract, median and greater 2° coverts: light molt on front only. These birds are also strongly dimorphic by the develop of the supraorbital crest - well developed in ♂s, only a trace in ♀s. Saw a brief bit of courting in which a ♂ faced a ♀ with 1 side erect and the tail spread and tilted towards the ♀. When the birds are shot at they get up and fly about 50 yards; otherwise they try to move by walking off rapidly, which they can do. They are, however, fairly tame in spite of all the shooting that's going on now.