[rec.birds] what kind of warbler?

weintrau@mpx0.lampf.lanl.gov (Weintraub, B. L.) (09/19/90)

A couple of days ago, while waiting for my ride late in the afternoon, I saw
a bird that I could not immediately identify.  It was a warbler with a well-
defined yellow throat, a white unstreaked breast and belly.  There was a 
definite contrast between the throat and breast.  It was streaked with black
along the sides.  There were either white tail spots or white outer-tail 
feathers.  Lighting was not good (no binocs, either).  If there were wingbars,
eye stripes or eye rings, they were too faint to see unaided.   

Habitat:  7000 ft. elevation.  In ponderosa pine trees on green turf lawn 
outside the building.  100 yards in any direction is native pinon/juniper/
ponderosa pine mesa top or canyon.  A couple miles away is thick pine forest, 
leading to alpine habitat at over 10,000 ft.  

Behavior:  Quite shy, trying to keep hidden in the trees.  Nondescript single
note call, possibly of alarm. 

I have never seen such a bird in this area.  I believe that it was either 
a Grace's or Yellow-rumped.  Unfortunately, there are contra-indicators
for both of these.  This one definitely did not have a yellow rump, nor
wide white wingbars.  Does the yellow on a Grace's throat ALWAYS extend down
the breast?  Any chance there's some odd immature migrant I haven't considered?

- Barbara
- all disclaimers apply -