As the eBird consultant for Lake County, I do not accept any reports of
either Pacific-slope or Cordilleran Flycatcher. I request that the observer
record it as "Western" Flycatcher. The reason for this is that studies done
in the area suggest that most or all the western-type flycatchers are
intergrades. Arch McCullum has conducted extensive vocalization studies of
these birds in the Warner Mountains. It is his opinion that the
vocalizations may sound like one species or another, but they were
invariable somewhere in-between. Also, individual birds will sometimes
sound like one species, only to vocalize as the other later on.
Until additional studies say otherwise, I do not believe it is possible to
say with certainty that a western-type flycatcher is one or the other in
Sorry to throw a wet blanket on this species split...
On Wed, May 15, 2019 at 6:50 PM Lars Norgren <larspernorgren...>
> I disagree about lumping the Western. I put Cordilleran on my life list at
> Crane Peak, Warner Mountains last June 2. Heard another one later that
> This is near where Hendrik got his, minutes from Adel.
> Two weeks later l alternated drpdead perfect
> Pacslopes(vocalizations), just like at my house in Manning, with undeniable
> Cordlerans as l drove from the southern city limits of La Grande north
> through town to Hilgard State Park then up the Grande Ronde River . I'll
> provide gps coordinates when l get home. Two Cordillerans were on territory
> in Hilgard State Park, easily audible above the noise of I-84. Lars
> On Wed, May 15, 2019, 4:39 PM Hendrik Herlyn <hhactitis...> wrote:
>> My only "Western" Flycatcher sighting in Oregon that I can confidently
>> assign to Cordilleran comes from the Deep Creek canyon near Adel. I have a
>> few tentative Cordillerans from Malheur NWR and Fields from the time
>> shortly after the split, but those IDs may have been based on assumption
>> rather than fact - at the time, birds in far Eastern Oregon were considered
>> most likely Cordilleran by default. If there ever was a candidate for
>> relumping, it is the Western Flycatcher!
>> Happy Empid hunting
>> On Wed, May 15, 2019 at 4:02 PM Alan Contreras <acontrer56...>
>>> There have been a couple of silent Western-type flycatchers at HQ in
>>> recent days. The refuge checklist just calls these Cordillerans but I’m
>>> not sure there is really a basis for calling them anything unless they are
>>> calling. I have heard obvious Pacslopes at Hart Mountain and exactly one
>>> Cordilleran in Oregon, ever, by sound (Burnt River Canyon, Baker County).
>>> What’s the current wisdom on these, er, species?
>>> Alan Contreras
>>> Eugene, Oregon
>>> TEMPORARY ADDRESS:
>>> Malheur NWR
>>> 36391 Sodhouse Ln
>>> Princeton OR 97721
>>> http://osupress.oregonstate.edu/book/edge-of-awe >>>
>> Hendrik G. Herlyn
>> Corvallis, OR
>> *"Nature is not a place to visit. It is home." -- Gary Snyder*