12 April 2016 – PNW Migration Update

Another night of moderate migration.  Seems like most movement was departures.

House Wren seems to be the new wave of summer residents to arrive en mass. But reports of early Western Tanagers and Swainson’s Thrush are popping up in the southern reaches of Oregon.

A new low pressure system is building offshore. If it holds off from forming rain cells we might get a nice southerly wind to push migrants northward tomorrow.

06 April 2016 – PNW Migration Update

Moderate movement around the region last night but heavier than last night.

Early House Wrens, more Nashville Warblers and Cassin’s Vireos. Common Yellowthroats are everywhere now.  Vesper Sparrows have returned to their north valley breeding grounds.

The weather is a mixed and confused bag of competing systems right now, so it’s hard to tell where this is going in the next few days.