Re: [cobirds] Gray Flycatcher ID

2020-04-27 Thread Charles Hundertmark


Gray Flycatcher also has light outer tail feathers. 

Chuck Hundertmark
Lafayette, CO

> On Apr 27, 2020, at 2:56 PM, David Tønnessen  
> wrote:
> 
> I agree with most everything Christian said. I have also witnessed birders 
> call empids Gray Flycatchers based on a downward tail flicking, but I think 
> the confusion is inexperience with empids and the lack of clarification when 
> this field mark is being taught. All empids flick their tails downward, only 
> Gray is special for dipping its tail BEFORE flicking it upwards. It can be a 
> hard judgement call since this is a fast movement and other species like 
> Dusky will flick upwards only slightly before a more significant and 
> noticeable downward movement. In further agreement, there are other marks 
> that should used to distinguish Gray as well; pale gray appearance, smooth 
> round/flat head shape, long thin bill with bright lower mandible, very faint 
> eye-ring. If you're not confident using a combination of these marks, leave 
> the flycatcher at empid sp.
> 
> 
> 
> David Tonnessen
> Colorado Springs
> 
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Re: [cobirds] Gray Flycatcher ID

2020-04-27 Thread David Tønnessen
I agree with most everything Christian said. I have also witnessed birders call 
empids Gray Flycatchers based on a downward tail flicking, but I think the 
confusion is inexperience with empids and the lack of clarification when this 
field mark is being taught. All empids flick their tails downward, only Gray is 
special for dipping its tail BEFORE flicking it upwards. It can be a hard 
judgement call since this is a fast movement and other species like Dusky will 
flick upwards only slightly before a more significant and noticeable downward 
movement. In further agreement, there are other marks that should used to 
distinguish Gray as well; pale gray appearance, smooth round/flat head shape, 
long thin bill with bright lower mandible, very faint eye-ring. If you're not 
confident using a combination of these marks, leave the flycatcher at empid sp.



David Tonnessen
Colorado Springs

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Re: [cobirds] Gray Flycatcher ID

2020-04-26 Thread Christian Nunes
Gray Flycatcher is the expected Empidonax anywhere in Colorado in April. They 
are commonly found up and down the Front Range as migrants, as well as on their 
breeding grounds in Pinyon-Juniper Woodlands.

A quick eBird search brought up three recent checklists with photos of 
purported Gray Flycatchers from the Denver Metro area:

https://ebird.org/checklist/S67607413
https://ebird.org/checklist/S67611544
https://ebird.org/checklist/S67748261


Like Norm, I find the field mark of downward tail wagging to be overly 
emphasized and often confounded by birders. The field mark that I find to be 
most reliable is the unique bill shape of Gray Flycatcher, being longer and 
with a shallower depth than other Empids, and having a distinct awl-shaped 
lower mandible. The lower mandible is always a nice clean orange color with a 
contrasting dark tip. Combine the bill shape/color with a round head and a bold 
pale lore, and then maybe a behavioral clue like tail dipping. Using this as 
guidance, it's clear that all reports of Gray Flycatcher in the Denver Metro 
area this year are 100% accurate.


Christian Nunes

Boulder, CO


From: cobirds@googlegroups.com  on behalf of Norm 
Erthal 
Sent: Sunday, April 26, 2020 8:22 PM
To: Colorado Birds 
Subject: [cobirds] Gray Flycatcher ID

I have seen several posts on Ebird for gray flycatcher. The ones with photos 
are not convincing for gray flycatcher. The id seems to be based on downward 
tail flicking. This may be the worst field mark for empids, They all flick 
their tails down. About the only thing that can be said with certainty is if 
they flick their tails up, they are probably not gray.

Norm Erthal
Arvada

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[cobirds] Gray Flycatcher ID

2020-04-26 Thread Norm Erthal
I have seen several posts on Ebird for gray flycatcher. The ones with 
photos are not convincing for gray flycatcher. The id seems to be based on 
downward tail flicking. This may be the worst field mark for empids, They 
all flick their tails down. About the only thing that can be said with 
certainty is if they flick their tails up, they are probably not gray. 

Norm Erthal
Arvada

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