June 6 Lower Colorado River to Parker Region, Colf. Saw nest in a willow, but the birds were shy & couldn't be certain. There was a Trail Flycatcher singing here, + 3♂ Yellow Warblers and 3♀ Bell's Vireos. Saw most of the birds we found yesterday. Heard ♀ poster notes of Empidonax difficilis. Near road we saw another pair of Weed's A. Flycatchers in some tall Tamarisk Trees, and at the Raneli we visited yesterday Gay found a ♂ Bronzed Gros- bird which I saw fairly well (neck well erected). Saw 2♀ Costa-Bk-clim type Hummers, and lots of Starlings in the trees. Not much else. Went from here to Blythe, arriving a little after 10 &.41. From here we went to Parker Dam stopping at some of the groups of trees c. ½ way there. Saw Weed's A. Flycatcher, at a boat landing-trailer camp; mostly House Sparrows + Gila Woodpeckers out. At a swale in there was a buzzy Warbler and we found a pair of Vermillion Flycatchers, and their nest. The nest was in a situation much like the other, in a diviner tree and contained one egg. The ♂ gave this aerial display once while I watched. The call was a