Yesterday at about 4:15 pm, I saw a Field Sparrow in Half Moon Bay. The bird was amazingly with a Clay-colored Sparrow once I focused in on the bird it was with. I had to leave and 30 mins later, no birds were around. The bird has NOT been seen today. The bird was in the front yard of a house, at the corner of Granelli Ave, and Alsace-Lorraine in Half Moon Bay. If the bird shows up, I will let folks know, and ask for respect to local homeowners. Try not to park right at this corner if you are coming here, as cars would obstruct the view of the yards where the bird may be. Look for habitats that are open with short vegetation, that is what it was in yesterday. I am thinking if the bird has been wintering in the area, this is beyond the regular spots where it hangs around, as I likely would have noticed it before. It may be good to look for sparrow flocks along the end of Magnolia Avenue, or Railroad Avenue. However keep in mind that the Field and Clay-colored were not with local flocks of crowned sparrows. Without a second sighting, I am not sure of what to suggest in terms of finding the bird.
Key features to look for is that this is a small sparrow, slim and with a long tail. The small bill is bright pink, and the eye has a bold white eyering. The head is patterned with gray and dull rust. It appears that this may be of the western subspecies, arenacea, as it was definitely larger than the Clay-colored Sparrow. Eastern birds are similar in size to Clay-colored/Chipping. Also it is less brightly buff and rust than an average eastern Field Sparrow.