new items from the Boreal Songbird Initiative, PRBO, and the Smithsonian Migratory Bird Center

There's always some news of interest at the Boreal Songbird Initiative.

and more from the Point Reyes Bird Observatory.

A recent paper from staff at the Smithsonian Migratory Bird Center is available online:
Breeding latitude and timing of spring migration in songbirds crossing the Gulf of Mexico.