May 1959 Aero flammers May 22 (cont.) She infrequently did the same wingslap- ping routine as the male. Ratio of 4:6 to one in this. Both birds then landed separately. I saw this routine repeated 3 times while Tom & I were setting traps. May 23 Pain still located W. of camp across stream from trophy. Saw both flying or displaying, both landed, apart (this has been case each time I've observed this).- strange bird flew by, [illegible] (lighter bird) flew up, flew at stranger & followed [illegible] ridge top. A hundred yards beyond. Then patrolled ridge for 1/4 mile & returned to "center" of trophy. Tom & I remained on ground during all this. Couple of pairs noted on E. side In evening a pair noted S. of above pain. One (lighter) peregrine passed pomarine gagea. Now commonly seen, flying in pairs May 25 Commonly seen today. Dimorphism of light male & brown female, especially under wing area to hold. Saw pair courting again - this pair just across stream 1 mile S. of camp.