Re: McCown's Longspur Photos

Mark Eaton

And my pictures are up as well…

I think we’ll have plenty more shortly… :)
Mark Eaton

On Oct 10, 2017, at 19:15, 'Alvaro Jaramillo' chucao@... [SFBirds] <SFBirds-noreply@...> wrote:

Nice shots Aaron!

  I would add that there are some subtle differences between McCown’s and Chestnut-collared. McCown’s has a more rectangular shaped head, there is a steep although short forehead, and then a flat crown. On Chestnut-collared the curve of the forehead-crown is more even. The bill is deep in McCown’s, but also very triangular (equilateral) in shape, almost like a Fox Sparrow. In some respects aspects of the bill and head shape and bill color, are more like a Snow Bunting which some studies suggest is a closer relative to McCown’s than the other longspurs. The facial pattern of Chestnut-collared also shows a shadow of the adult male pattern, in that there is a dark crescent at the lower rear of the ear coverts, and a dark triangle on the upper rear of the ear coverts; often the darkest part of the face on a Chestnut-collared are these areas and not near the bill or lateral throat stripes. This SF individual McCown’s has a buff chest area that is like a ghost pattern of the dark breast area of the adult male McCown’s.

  Awesome photos, great learning by looking at them.

Maybe we can score one in San Mateo!!


Alvaro Jaramillo

<mailto:alvaro@...> alvaro@...

From: SFBirds@... [mailto:SFBirds@...] On Behalf Of Aaron Maizlish aaron.maizlish@... [SFBirds]
Sent: Tuesday, October 10, 2017 6:45 PM
To: SFBirds
Subject: [SFBirds] McCown's Longspur Photos

SF Birders,

Photos are likely starting to percolate onto eBird and Flickr, but I thought I would share with everyone some portraits from Crissy Field from this morning.  I arrived at about 9:10AM, and like everyone else it seems I was able to spend some quality time with this great bird.

In case you want to enjoy the ID challenge yourself, I've posted eight pictures on my flickr feed -   I found the National Geographic Guide to be more helpful than Sibley in this case.  (Beadle and Rising helps too if you have it.)  Note the pink bill with black tip - the plain auriculars, plain bare--streaked buffy breast (which is very bright on this bird) and the rufous-toned median coverts (not bright like a male.)  

I'm glad it turned out to be a McCown's, since therefore this was also my ABA-Continental #600.  Thanks Hugh!

Photostream starts here:

Aaron Maizlish

San Francisco, CA

[Non-text portions of this message have been removed]

Posted by: "Alvaro Jaramillo"

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