Marshall, 1942 Notiochelidon pileata Los Esmeriles March 12 5 perched in top dead creviced oak on twigs about 200' up on canyon side at lower limit cloud forest. Twittering - sounded like bunch goldfinches in a tree. Also "purr-rut" ~ rough-wing (I thot they might be that) - Were sitting - shaking wings etc (sunny). Got 2 with one full load 10's. - This is the bird which I have seen every day thus far - & seen again today - always 2 - 5 or 6 together hawking about over bare ridges & out over canyons also over canyons of cloud forest. Call a "purr-rut" somewhat ~ rough-wing but faster roll almost a buzz & sharper almost "bzzzet". Usually alone - with violet greens only by chance. Flight somewhat ~ rough-wing - much coasting with occasional single beat, but always very swift. When beats wings - very rapid - swift-like. Resident? - to be seen. March 14 & 2077 taken from flock 5 or 6 hawking over bare canyon ridge - seen every day so far. March 21 Singing - a few little warbles - pairs & group of 6 seen. March 29 & in 2201 taken as several foraged over ridge. [illegible] March 30 & 2207 skel " " foraged with several over ridge belowp. March 31 Huge flock found to have H.Q. in S-facing canyon higher up wit. several 100. Perched in top low load tree. Foraged low over cleared ridge 2217 skel - 2219