Scott, Tweeters, and Vancouver Birders

For comparative purposes, the arrival dates for these two species in
the Vancouver, BC area are as follows:

Hammond's Flycatcher (20 years' data)

Mean arrival date: April 23
Earliest arrival date: April 9

Pacific-slope Flycatcher (21 years' data)

Mean arrival date: April 26
Earliest arrival date: April 12

It look like Hammond's arrives, on average, 3 days earlier than
Pacific-slope at Vancouver, although both species may be a little
later than in Snohomish County.

Wayne C. Weber
Kamloops and Delta, BC
contopus at home.com



----- Original Message -----
From: Scott Atkinson <scottratkinson at hotmail.com>
To: <tweeters at u.washington.edu>
Sent: Wednesday, April 18, 2001 10:27 AM
Subject: 2 Empidonax arrive; hybrid Gl x Gl-w. Gull


>
> I had both HAMMOND'S and PACIFIC-SLOPE FLYCATCHERS (one of each,
calling
> birds) at Tiny's Land in n. Lake Stevens early this morn, on the
edge of a
> mixed flock that included a couple Townsend's Warblers, several
chickadees,
> and kinglets. The Hammond's is a tad earlier than average, but the
> Pacific-slope was right on schedule, with April 18 the arrival for
three of
> the last four years here.
>