Howell, T.R. 1950 S. varus ssp. 50 mi. SW of Princeton, ft., British Columbia May 30 (cont'd.) followed and alighted in a spruce at a higher level than the ruber. Then it flew to a small dead tree and tattooed several times. The ruber payed no heed. The nuchalis did some flycatching, then flew down to the ruber, "crest" up and squawking. The ruber flew off a little ways, and began feeding again. In the next 30 minutes, this was repeated several times - the nuchalis aggressive, tattooing - the ruber flying off a short distance when approached, never tattooing. The action took place over a strip of hillside about 100 yds long. The nuchalis flew over across the road to the east slope, a distance of several hundred yards, and in a few minutes was back. Another nuchalis appeared, probably the mate of the first. One nuchalis, presumably the ♂ and the same one each time, continued to harass the ruber, tattooing loudly and the flying over to it in an aggressive way, squawking and with its "crest" up. The 2nd nuchalis seemed to follow along, giving an occasional tattoo. The ruber always flew off when the nuchalis came up, but seemed determined to stay in the general area - the chase went back and forth, often involving the same trees. The ruber stayed consistently low or on the ground, but did a bit of flycatching. The nuchalis tended to stay about 20 ft up, did quite a lot of fly-