Tweeters,

Hugh Jennings reports he "just got back from Colorado, one week was at a
cabin at 8900 ft., about 10
miles north of Silverthorne. Among the 31 birds he recorded was an:
> Olive-sided Flycatcher- "This is first time I was aware of their
'Pip-Pip-Pip'
> call. I had only heard the 'Quick-three-beers' song before."

When I've heard the "pip-pip-pip call" of an Olive-sided Flycatcher and
tracked it down, I've usually (migrants in spring excepted; also I can't
remember hearing one on their August/early September southbound migration)
found it to be a young bird, perhaps maintaining contact and pressuring
it's parents to keep bringing them bugs? My sample size of occasions is
small (3 or 4), so I certainly don't imply one can conclude that all
Olive-sided Flycatchers going "pip-pip-pip" are juveniles. But, I would be
interested if other observers out there have experience with this call
note by Olive-sided Flys and determined the age of the bird giving this
call.

Andy Stepniewski
Wapato WA