Type 1 Evening Grosbeaks at Desert View
13 Mar 2018, 9:04 PM,
#1
Type 1 Evening Grosbeaks at Desert View
About a month ago, on 10 Feb 2018, I recorded a small flock of Evening Grosbeaks here at Desert View on the South Rim. The spectrograms did not look like the expected (?) Type 4, so I sent them to Aaron Haiman who wrote about the different types here: https://ebird.org/me/news/evening-grosbe...lap-occurs

He confirmed my suspicion that these were Type 1 birds, which are the Central/Northern/Canadian Rockies/Pacific Northwest population.

This recording stuff is pretty cool! Interesting to be able to have these insights into species and population movements. Also, recordings from AZ seem to be pretty scarce, and it's not totally clear what is the expected type (4 or 5) in a lot of areas.


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14 Mar 2018, 5:43 AM,
#2
RE: Type 1 Evening Grosbeaks at Desert View
For anyone behind the curve, here is Aaron's primer on EVGR types:
[Image: 6a00e5505da1178834017ee6c55667970d-800wi.jpg?w=640]
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16 Apr 2018, 9:05 AM,
#3
RE: Type 1 Evening Grosbeaks at Desert View
What call type do these look like to you, Brian? From my backyard today...

   

Jason
Flagstaff, AZ
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16 Apr 2018, 9:14 AM,
#4
Wink  RE: Type 1 Evening Grosbeaks at Desert View
By the way, I think these are "Type 1".

And, here's a sample audio...does it work?

.wav   EVGR_Flagstaff_Part1_trunc2.wav (Size: 862.4 KB / Downloads: 5)
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16 Apr 2018, 2:39 PM,
#5
RE: Type 1 Evening Grosbeaks at Desert View
1. we still have 16 evening grosbeaks here in sedona at 3950 elevation.
2. of course i never hear them vocalize at all so no clue what type.
3. only 1 adult male out of the 16
4. interesting there is one with what nanette thinks is papilloma virus on it's feet like warts. 
rich armstrong
richarmstrong@q.com


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16 Apr 2018, 3:02 PM,
#6
RE: Type 1 Evening Grosbeaks at Desert View
looks like Type 1 to me, Jason. Cool!

better bleach that feeder, Rich.
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20 Apr 2018, 8:47 AM,
#7
Photo  RE: Type 1 Evening Grosbeaks at Desert View
I recorded what I believe to be Type 1s this morning. What do you think? There is a thread on the Arizona Birding Facebook page that has some great info on analyzing EVGR calls.

Joe


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