Steppie wrote -

> The swarm of White-crowned Sparrows this spring arrived seemingly overnight
> in the Wapato are of south-central Washington. The evening of April 13
> seemed to herald a shift in air masses, from a persistent, cool,
> predominately northerly flow to a southwesterly one. Bingo! The flight that
> night of the 13th must have brought millions of birds into the region-from
> geese to sparrows, even a sprinkling of Neotropical migrants.

Yep. Ride the wind and save a few kilocalories. They were here in central BC
on the 20th. It can be instructive to view one of the web radar sites on a
night with no precipitation and a warm south wind in the spring. What looks
like rain on the radar is instead migrating birds. This happened a few days
ago in the Puget Sound area.

- Jack



Jack Bowling
Prince George, BC
jcbowling at mindlink.bc.ca