Pteroca 1940 Icterus verena June 16-18 Smilt Hayfork, 2,400 ft., Trinity Co., Calif. or five. About four pairs present in dense willow thickets south of Camp along a tributary leading into Duncan Gulch. Also noted along Hayfork Creek just west of the Hayfork Creek - Big Creek junction and along lower Big Creek-- in all cases in dense willow thickets. While the headquarters of these birds appear to be willow thickets, they will range out into open brush of Leonothus and manzanita bordering such thickets. Both males occupying territories near our Camp have been observed ranging out into the brush. One of them performed the peculiar liltting flight together with song which may have significance as territorial announcement. Song heard regularly during the day, and fairly frequently during the night also. June 24-26 Loni W Hyampom, 1,200 ft., Trinity Co., Calif. Common in the willow-ash-grape thickets along the base of the south facing slope near Camp and in willow thickets on the Hyampom flat southwest of camp.