From south-bay-birds-bounces+south-bay-birds-archive=[[email protected]] Sun May 18 17:13:22 2003 Received: from www.plaidworks.com (localhost [127.0.0.1]) by plaidworks.com (8.12.9/8.12.9) with ESMTP id h4J0Bea2011910 for <[[email protected]]>; Sun, 18 May 2003 17:11:40 -0700 (PDT) Received: from sccrmhc03.attbi.com (sccrmhc03.attbi.com [204.127.202.63]) by plaidworks.com (8.12.9/8.12.9) with ESMTP id h4J0AefF011868 for <[[email protected]]>; Sun, 18 May 2003 17:10:40 -0700 (PDT) Received: from computer.attbi.com (12-234-255-153.client.attbi.com[12.234.255.153]) by attbi.com (sccrmhc03) with SMTP id <2003051900103900300afb6me>; Mon, 19 May 2003 00:10:39 +0000 Message-Id: <[[email protected]].> X-Sender: [[email protected]]. X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Sun, 18 May 2003 17:13:39 -0700 To: Matthew Dodder <[[email protected]]>, SBB <[[email protected]]> From: Alvaro Jaramillo <[[email protected]]> Subject: Re: [SBB] Yellow-headed Blackbirds In-Reply-To: <[[email protected]]> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Cc: X-BeenThere: [[email protected]] X-Mailman-Version: 2.1.2+ Precedence: list List-Id: South Bay Birding List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: south-bay-birds-bounces+south-bay-birds-archive=[[email protected]] Errors-To: south-bay-birds-bounces+south-bay-birds-archive=[[email protected]] At 03:28 PM 5/18/2003 -0700, Matthew Dodder wrote: >All, > >the YHBL flock was still present and quite vocal at the end of Disc >Drive in Alviso on Saturday. This area is, as mentioned by others, is >near the Jubilee Christian Church. The flock Kelly and I saw yesterday >seemed to be made up entirely of females and immatures, but some birds >appeared black and had very yellow heads. No birds showed white wing >flashes at all, so I assume these bright birds were simply vivid >females. Thoughts? Matthew: Male Yellow-headed Blackbirds are much larger than females at any age. Size alone can help you to sex them in a mixed flock. The blackish ones that you saw with bright yellow heads sound like immature males. They don't always show white on the wings, and it can be hard to see at times in the field on males of that age. Al Alvaro Jaramillo Biologist San Francisco Bay Bird Observatory P.O. Box 247 Alviso, CA 95002 (408)-946-6548 http://www.sfbbo.org/ [[email protected]] _______________________________________________ Do not post admin requests to the list. They will be ignored. south-bay-birds mailing list ([[email protected]]) Help/Unsubscribe/Update your Subscription: http://www.plaidworks.com/mailman/options/south-bay-birds/south-bay-birds-archive%40plaidworks.com This email sent to [[email protected]]