18 September 2017 – PNW Migration Update

There is not much to see on the radar due to the clouds and rain so we’ll save some disc space today and leave out the radar loop.

Over the weekend FOS  and changes noted: Sandhill Cranes are back by the hundreds, Great Egrets are staging in the hundreds, Cackling Geese numbers reaching the thousands, Golden-crowned and Fox Sparrows are showing up, Lincoln’s Sparrow and Dark-eyed Junco numbers are increasing on the valley floor as they come down out of the mountains, and Double-crested Cormorants are moving inland.

I probably missed a few as well.

A static shot of the National Radar Composite shows the very active Mississippi Flyway but with good movement down the Atlantic and moderate movement along the Central Flyway

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15 September 2017 – PNW Migration Update

Another solid night of migration with returns into the 20+ dBZ range.  More noticeable migrants pile out of the Nisqually Basin and into the Vancouver Basin.

Reports of more Cackling Geese, first Hermit Thrushes on the valley floor, Fox and Golden Crowned Sparrows as well.  We are well into the season and trips into the field this weekend should yield plenty of FOS birds.  The Chapman School Vaux’s Swifts are still piling into the chimney by the thousands each night.

Barn Swallows continue to roost and fly-out at dawn along the Willamette River in Yamhill County.  The evening roost flight was particularly dense last night.

12 September 2016 – PNW Migration Update

Migrants are feeling the call south.  With winds out of the east, probably from temperature differentials, the cross winds did not slow the birds down last night.  The upper left hand corner was jammed with southbound sojourners.

The first Cackling Geese are being seen, wintering pink-footed gulls are pushing into the valley and more early Golden-crowned Sparrows are popping up here and there.

06 September 2016 – PNW Migration Update

While there was light movement last night most of it was obscured by clouds.  So we’ll take a look at the Hydrometeor Classification Loop so we can pick out the biological returns. (brick reddish signal)

On the ground; reports for Fox, Golden-crowned and Lincoln Sparrows, Hermit and Varied Thrushes, and the continued passage of shorebirds.  So far it’s been an unusual season — lots of birds moving through but at a low, but consistent pace.