Fwd: Olive-sided Flycatcher in Lake Park 8/18

Lake Park Birders:

Below is an advance level discussion by my main two birding mentors,
John Idzikowski and Bill Mueller. The Olive-sided Flycatcher WAS a
migrant.

--- Paul Hunter
http://home.roadrunner.com/~phunter1/lakeparkbirds.html
=====================================================

Begin forwarded message:

From: William mueller <iltlawas@earthlink.net>
Date: August 20, 2009 7:28:05 AM CDT
To: Paul Hunter <phunter1@wi.rr.com>
Subject: Re: Fwd: Olive-sided Flycatcher in Lake Park 8/18
Reply-To: William mueller <iltlawas@earthlink.net>

When you say YBFL is latest, do you mean latest in spring? That would
be correct, but MANY of the flycatchers begin southward migration in
Aug.; some individuals earlier than others. The earliness of phoebes
in spring turns into lateness in fall - they are most often the last
flyc spp to leave WI in fall. Departure dates for many of the others
are spread over Aug-Sept., some may stay into Oct. Most are quite
long-distance migrants - but not phoebe.

--------------------------
Begin forwarded message:

From: John H Idzikowski <idzikoj@uwm.edu>
Date: August 20, 2009 11:56:52 AM CDT
To: Paul Hunter <phunter1@wi.rr.com>
Cc: "William P. Mueller" <iltlawas@earthlink.net>
Subject: Re: Olive-sided Flycatcher in Lake Park 8/18

I have at least a dozen records of Osfly from the last half of August
in Mke Co; most leave the state by sept 15. I would definitely call
this present bird a migrant. Ybellied Fly are late in May but
generally peak in late Aug and early Sept.- again most are gone by
Sept 15; Least is the latest Empid in fall and the earliest in spring
as are Phoebes. A late fall empid is nearly always a Least except
when it is a western vagrant- esp Hammond's or Dusky/Gray. Who knows
what ultimate factors played into the annual occurrences-timings of
these birds- Pleistocene glaciation followed by warming and habitat
availability? But they all seem to be obligate insectivores and
timing also depends upon length of migration route- the earliest are
temperate migrants wintering farthest north. There is probably
somewhat of a correlation between relative wing length and distance
migrated in flycatchers as in other passerines.

ji
----- Original Message -----

Begin forwarded message:

From: John H Idzikowski <idzikoj@uwm.edu>
Date: August 19, 2009 10:18:29 AM CDT
To: Paul Hunter <phunter1@wi.rr.com>
Subject: Re: Olive-sided Flycatcher in Lake Park 8/18

Paul- in my experience these are migrants that are consistently seen
after Aug 15 in s Wisc.

----- Original Message -----
Begin forwarded message:

From: William mueller <iltlawas@earthlink.net>
Date: August 19, 2009 3:46:18 PM CDT
To: Paul Hunter <phunter1@wi.rr.com>
Subject: Re: Fwd: Olive-sided Flycatcher in Lake Park 8/18
Reply-To: William mueller <iltlawas@earthlink.net>

It is definitely a migrant - they start south in August normally.
Closest nesting areas are 250 miles north of here.

-----Original Message-----

From: "Paul Hunter" <phunter1@wi.rr.com>
To: "John Idzikowski" <idzikoj@uwm.edu>, "William P. Mueller"
<iltlawas@earthlink.net>
Sent: Thursday, August 20, 2009 7:14:39 AM GMT -06:00 US/Canada Central
Subject: Fwd: Olive-sided Flycatcher in Lake Park 8/18

John and Bill,

I was hoping that you two would comment on whether this flycatcher
was a migrant or not. I know that the Yellow-bellied Flycatcher is
one of the latest passerine migrants in our area, but Phoebes are one
of the earliest. What accounts for such a variation in flycatcher
migration timing?

--- Paul Hunter
http://home.roadrunner.com/~phunter1/lakeparkbirds.html
=====================================================
From: "Paul Hunter" <phunter1@wi.rr.com>
To: undisclosed-recipients:;
Sent: Wednesday, August 19, 2009 8:07:31 AM GMT -06:00 US/Canada Central
Subject: Fwd: Olive-sided Flycatcher in Lake Park 8/18

Lake Park Birders:

I am forwarding John Idzikowski's sighting of an Olive-sided
Flycatcher. I believe this is not necessarily a migrant but rather
an individual disbursing from nesting areas. Thanks to Jym Mooney
for forwarding John's message to me.

--- Paul Hunter
http://home.roadrunner.com/~phunter1/lakeparkbirds.html
=====================================================

-----Original Message-----
From: John H Idzikowski [mailto:idzikoj@uwm.edu]
Sent: Tuesday, August 18, 2009 9:56 AM
To: hopmoon@milwpc.com
Subject: lake pk

olive s fly this morn working the snags near the warming house