Howell, T.R. 1950 S. varius ssp. Alexandria, 1800ft, 28mi. S. of Quesnel, British Columbia June 14 (cont'd.) At 7:00 P.M. I found a nest about 25 ft. up in an aspen about 20" thick, which had no other holes in it, facing west. It is at the northwest corner of the aspen birch grove where I saw nuchalis this morning; both parents were seen at the nest at the same time, and they are typical nuchalis. Both came bringing insects in their beaks, and went in at each visit. The birds seem to depend on birches a great deal for feeding, but so far I have not seen a nest in one. The usual location seems to be in a mature aspen not far from a clearing of some sort (for flycatching?) and with well-worked birches and/or alders near by. This nest is at the edge of a large, marshy field. The ♂ nuchalis I collected yesterday has no white post-ocular stripe - just solid black. This seems to be the case with the ♂ at the nest of June 12; it is why I thought the birds were intermediates when first seen. June 15 - clear, warm. I went to a large birch with extensive workings which had attracted a swarm of hornets, butterflies, and other in- sects. I saw a nuchalis, possibly the same one, visit the tree twice during the morning. It came up, promptly chased the hornets away, and began to feed at the sap wells at the top of the working, hitching round and around