There was a moderate amount of movement last night. Birds were picking out opportunities between the rain cells.
Only listserve chatter of note comes from San Diego where Chipping Sparrows, Nashville, Yellow and Wilson’s Warblers, Yellow-breasted Chat, and Hammond’s and Western Flycatchers were reported.
Paul has his archive back on line after a few days of being down. I’ve included a static shot of the action along the Mississippi Gulf coast line. Looks like the neotrops are pushing their way north in good numbers. Check out the full loop here
A little break in the weather. Rains subsided and the wind died down. Conditions look a bit dicey for the next couple of days at least.
Even so, with the respite last night we had a moderate flight last night. There are still a lot of waterfowl in the area that need to scoot their cloacas north and i suspect the bulk of the radar returns are from them.
New reports: Swainson’s Hawks are showing up on the east side of the Cascades, an influx of Brown-headed Cowbirds and a Yellow Warbler in the Willamette Valley.
Other than that it’s a lot of infill of the early migrants.
Scattered rain cells and the north winds on the back edge of this trough kept migration to a bare minimum last night.
Vanguard Black-bellied Plovers have made it to the Portland area. Scattered Black-throated Gray Warbler reports are popping up. Not much else.
The Central and Mississippi Flyways had the most action last night. Probably the heaviest they’ve seen this year. In the gallery is a snap shot but be sure to head on over to Paul’s archive and catch the whole loop.
Excellent night flight, and as i write this it is still at full tilt.
Only new migrant reported that i saw listed was Purple Martin on the southern Oregon coast.
But tonight is one of those teachable moments on the interaction of the weather and migration. So we’ll look at the conditions at 850 mb heights — note the stream lines and the ridge in the west and the trough in the east. Then check out the static image of the national radar composite. (The full loop can be viewed over at Paul’s archive: here)
The Pacific Flyway from the Mexican border to the Canadian border is solid blue with birds. Everywhere else? Central and Mississippi Flyways — nada. Atlantic Flyway? — just a tiny bit on the SE coast ahead of the advancing cold front.