Date: 9/26/19 8:44 pm
From: Tom Crabtree <tc...>
Subject: [obol] Re: Red Crossbill Types
You don’t need to know 20+ call types, Alex. All you need to know are the 3 or 4 that occur in your area and you will be able to ID 95% of the birds that are around. That’s a far cry from being impossible to ID RECR’s by call type. Granted not every birder can do this and shouldn’t report everyone they hear by type. But realistically, if you are in Bend and report a Red Crossbill as a Type 2 no one is going to question you.



Tom



From: Alex Lamoreaux [mailto:<aslamoreaux...>]
Sent: Thursday, September 26, 2019 1:07 PM
To: Tom Crabtree
Cc: OBOL; <eskyrimh...>; <pgeorgekline...>
Subject: Re: [obol] Re: Red Crossbill Types



If there’s someone out there who can ID each of the 20+ call types by ear and have that confirmed by recordings, I’d love to meet them! It’s not humanly possible. You can have a hunch based on range and general sound, but there’s no way to be confident or accurate without recorded proof.



Anyway, my point is that while certain Types of Red Crossbill have been confirmed to prefer certain areas of the state, birders should not automatically eBird their sightings as those specific Types without recorded proof. That’s a very bad road to go down as a birding community, and first-class stringing.



Alex







On Thu, Sep 26, 2019 at 1:01 PM Tom Crabtree <tc...> wrote:

And a friendly rebuttal – not true. IDing types by ear is possible, “To be able to identify all individuals of each call type with 100% certainty, audiospectrographic analysis is needed.” https://ebird.org/news/recrtype/



Tom



From: Alex Lamoreaux [mailto:<aslamoreaux...>]
Sent: Thursday, September 26, 2019 11:48 AM
To: <pgeorgekline...>
Cc: OBOL; <eskyrimh...>; <tc...>
Subject: Re: [obol] Re: Red Crossbill Types



And just another friendly reminder that call types cannot be determined without analyzing the spectrogram of a recording. IDing the types by ear is not possible.



Alex











On Thu, Sep 26, 2019 at 12:01 PM Philip Kline <pgeorgekline...> wrote:

Hi Erik:



In my fairly limited experience in Northwestern Oregon, the general rule of thumb seems to be that Type 3 is more common in the Coast Range and the west side of the Cascades (this is the type I've identified most often in the general Portland area), Type 10 is usually found on the immediate coast and nowhere else, and Type 4 can often be found in the Cascades, but doesn't seem to be particularly common. All this is with a huge dollop of uncertainty and the caveat as Lars notes that they are so nomadic they can be completely absent (or at least much harder to find) from these areas for long periods. I would be curious to hear from others with more experience if any of these general assumptions are incorrect.



Philip Kline



On Thu, Sep 26, 2019, 10:19 AM Tom Crabtree <tc...> wrote:

Type 2’s can be found in profusion around Bend & Sisters.



Tom Crabtree, Bend



From: <obol-bounce...> [mailto:<obol-bounce...>] On Behalf Of Erik Haney
Sent: Thursday, September 26, 2019 10:08 AM
To: <obol...>
Subject: [obol] Red Crossbill Types



Good Day,



I'm inquiring on the different types of Red Crossbill that can be found in Oregon, preparing

for a trip from October 30th to November 10th mostly all over Oregon from Bend/Sister area

to Medford/Ashland area and three days along the whole coast south to the north. Are

the different types specific to certain areas in the state or are they more habitat specific?



Thank you for any feedback with this question



Erik Haney

Saint Petersburg, Florida

--

Alex Lamoreaux

717-943-7086

Naturalist and Senior Leader/North America Specialist for Wildside Nature Tours
https://wildsidenaturetours.com/team-member/alex-lamoreaux/

--

Alex Lamoreaux

717-943-7086

Naturalist and Senior Leader/North America Specialist for Wildside Nature Tours
https://wildsidenaturetours.com/team-member/alex-lamoreaux/


 
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