[wisb] Re: Juncos (Oregon vs Brown Slate-colored)
- From: "Tom Schultz" <trschultz@xxxxxxxxxxxxxx>
- To: <heuers3@xxxxxxxxxxxxxx>, <wisbirdn@xxxxxxxxxxxxx>
- Date: Wed, 20 Jan 2010 19:36:18 -0600
In general, that is correct -- most of the juncos that winter in Wisconsin
are likely "Slate-colored" Juncos. However, some of the female (or
immature?) birds that have brownish flanks (or rusty-brown) that contrast
sufficiently with a pure gray (as opposed to a brownish or brownish-gray)
hood are likely these "Cassiar" or cismontanus juncos. The problem is often
where to draw the line that distinguishes these from "Slate-colored". In a
case like this, where a suspected different subspecies is not distinctively
marked, it is probably best to leave it indefinite and just call it a
Dark-eyed Junco.
I think it's still fun to look at the variation that exists in juncos, and
check for birds that might be strikingly different -- and perhaps contrasty
enough to be called an "Oregon" junco or some other distinctive subspecies.
If possible, it might be useful to obtain photos of such a bird for future
reference or discussion.
Tom Schultz
Green Lake Co.
----- Original Message -----
From: "Curt Heuer" <heuers3@xxxxxxxxxxxxxx>
To: <wisbirdn@xxxxxxxxxxxxx>
Sent: Wednesday, January 20, 2010 6:31 PM
Subject: [wisb] Re: Juncos (Oregon vs Brown Slate-colored)
>I thought that the brownish juncos we see in Wisconsin were females of the
>Slate-colored Juncos - the darker, gray/black ones being the males. Is
>that wrong?
>
> Curt Heuer
> New Franken, Brown County####################
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