Date: 12/28/18 8:48 am
From: Sally Hill <1sallyhill.9...>
Subject: [obol] Re: Fw: [BIRDWG01] Intermediate Egret - Lane County Oregon
As illustrated in this photo from the Midway Atoll INEG from 2013:

Sally Hill
Eugene Oregon



On Thu, Dec 27, 2018 at 9:46 PM Tom Crabtree <tc...> wrote:

> I think the one field mark pointed out in Noah’s post that hasn’t gotten
> any discussion here is the much larger eye of Intermediate Egrets (to check
> this out go to the Macaulay Library and look at their photos of
> Intermediate Egret). It is a striking difference. The Washburn Lane bird
> seems to have a typical smaller eye of a Great Egret.
>
>
>
> Tom Crabtree, Bend
>
>
>
> *From:* <obol-bounce...> [mailto:<obol-bounce...>] *On
> Behalf Of *Leith McKenzie (Redacted sender "loinneilceol" for DMARC)
> *Sent:* Thursday, December 27, 2018 9:35 PM
> *To:* Obol
> *Subject:* [obol] Fw: [BIRDWG01] Intermediate Egret - Lane County Oregon
>
>
>
> Cross posting in case anyone has relevant photos.
>
>
>
> At this point in the discussion, it seems to me that any and all "field
> marks" other than the size of the bird (and perhaps Mr Reid's ratio below)
> have been both expounded and called into question at length by experienced
> birders. (e.g. Intermediate does not have a kinked neck) . . .
>
> Maitreya
>
>
>
>
>
> ----- Forwarded Message -----
> *From:* Martin Reid <upupa...>
> *To:* <BIRDWG01...>
> *Sent:* Thursday, December 27, 2018 5:37 AM
> *Subject:* Re: [BIRDWG01] White Egret - Lane County Oregon
>
>
>
> Group:
> Are there any photos that provide a clear look at the tarsus and foot?
> INEGs have big feet! Well, toes actually. With a good view this is often
> obvious - rather like the difference between the toes of Orange-breasted
> Falcon versus Bat Falcon.
> Given that INEG has a proportionally shorter tarsus than GREG, a
> comparison of tarsus length to toe length might provide a useful difference.
> I took the liberty of downloading the images at the following two web
> pages, and used them to create a ratio of tarsus length (from bend of knee
> to base of “exposed” toe) : toe length (base of “exposed” toe to tip of
> tail). The measurements were made with each element of the leg in the
> horizontal position.
> The results: Great Egret 1.67 : 1 ; Intermediate Egret 1.25 : 1
>
> Even allowing for imprecise measurement and that this is a sample of one,
> this suggests that there is a significant difference in leg and foot
> structure between the two taxa.
>
> https://blog.duncraft.com/wp-content/uploads/2009/10/File-Jun-14-12-13-41-PM-1080x720.jpeg
> <
> https://blog.duncraft.com/wp-content/uploads/2009/10/File-Jun-14-12-13-41-PM-1080x720.jpeg
> >
> https://ebonph.files.wordpress.com/2012/02/intermediate-egret-neon.jpg <
> https://ebonph.files.wordpress.com/2012/02/intermediate-egret-neon.jpg>
>
> Martin
>
> ---
> Martin Reid
> San Antonio
> <upupa...>
> www.martinreid.com
>
>
>
>
>
>

 
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