01 Apr 2015 — PNW Migration Update

Only the slightest sign of movement last night.  Dodging rain cells and fighting cross winds gets old.  There are better opportunities ahead.

San Diego area reports the first Gray Flycatcher, more Black-headed Grosbeaks and Orioles.

Central Valley shorebirds are increasing with the arrival of Black-bellied Plovers.

Willamette Valley has reported all of the swallows with the exception of Bank Swallows.  More Common Yellowthroats as well.

31 Mar 2015 — PNW Migration Update

To save server space — no radar loop today.

The birds did move north ahead of the current system but put down upon the arrival of the rain.

Arrivals of note:

Yellow Warbler in the Central Valley and Tufted Puffins on the Oregon coast.  Shorebirds are on the move — Lesser Yellowlegs and a Willet reported in the Portland Area.

30 Mar 2015 — PNW Migration Update

Moderate levels of migration took place throughout the weekend.  Today’s radar loop is a good representation of the weekend.

Listserve chatter:

San Diego: Western Tanagers, Lazuli Buntings and Black-headed Grosbeaks.

Central Valley: more Western Kingbirds and shorebird movement.

Oregon: more Common Yellowthroats, Northern Rough-winged Swallows and a House Wren.


27 Mar 2015 — PNW Migration Update

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.

Big picture gallery today.

26 Mar 2015 — PNW Migration Update

The rain and clouds cleared out over night.  The winds, not optimal, but not a real challenge to flight.  Birds were heavily on the move. A “green doughnut” night.

The Central Valley CA, added Western Wood Pewee and “Western” Flycatcher to the list of neotrops.

Oregon added Northern Rough-winged Swallow and Common Yellowthroat.  Molting Dunlin flocks are being seen as well.

25 Mar 2015 — PNW Migration Update

Heavy cloud cover and scattered rain the last two nights have left us without any usable radar images.

Reports from the Central Valley: Black-throated Grey Warblers, Western Kingbirds and Bullock’s Orioles.

Probable migrant Orange-crowned Warblers reported in the Willamette Valley.  First Barn Swallows and Chipping Sparrows as well.

23 Mar 2015 — PNW Migration Update

Just a bit of narrative today as the radar images are a bit insipid.

Ospreys are back in force and already rebuilding their nesting platforms.  Rufus Hummingbirds are staking out territories. Northern Rough-winged Swallows and Barn Swallows are being reported to the south of us.  Great Blue Heron rookeries look to be ready for egg laying.

Looks like the Tundra Swans have left.  I only saw one the whole weekend.  Duck numbers are down, as are Golden-crowned  and Fox Sparrow numbers.  I had two Fox Sparrows in song this weekend.

19 Mar 2015 — PNW Migration Update

A few more Violet-green Swallows but that is about it for now.  We are still seeing a pretty solid movement of winter residents.  Again, i think these are all waterfowl with a small mix of the vanguard migrants.

Down in the San Diego area more House Wrens and the first Cassin’s Vireos now being reported.

18 Mar 2015 — PNW Migration Update

The San Diego area is reporting the first Wilson’s Warblers and House Wrens and  Western Kingbirds and Bullock’s Orioles have made it into the Central Valley.

I’ve been keeping an eye on the National radar as well over on Paul’s archive.  I haven’t seen anything spectacular.  It’s pretty much all low density movement much like we’ve been seeing here in the Pacific Northwest.

But, birds are still moving north and you can see them dodging the rain cells in last night’s radar capture.


17 Mar 2015 — PNW Migration Update

Many of our summer residents are nest building: Chickadees, Crows, House Finches, Lesser Goldfinches, Anna’s and Rufous Hummingbirds …..

More Ospreys are being reported but that is about it.  The movement is still wintering birds staging north.

And it was pretty heavy last night; up the I5 corridor and along the coast.  I have put all three PNW radar loops in today’s gallery. RTX – Portland, LGX – Gray’s Harbor, ATX – Seattle.