At 16.00 - 17.30 I watched 2-3 warblers foraging in a birch and red  maple in 
our yard.  
 
rather bright yellow wash to breast with distinct streaking 
throats unstreaked
white wing bar (located close to leading edge of folded wing)
dull grayish upper parts 
white undertail coverts with black at extreme tips of tail
faint dark line through eye contrasting with pale gray of face
thin pointed bill
short tail
foraging often close to branches, pausing often, but also flying to  leaves
silent
 
At first I though they were immature yellow-rumped warblers but the bill  was 
too fine and yellow rumps (I still think of them as 'myrtles') seem always  
to be chipping and are bigger. They also seemed smaller and plumper than yellow 
 rumps.
 
I think these were fall male Cape May warblers but have rarely seen this  
species.  I would appreciate any comments.
 
Regards,
 
Robin Todd
Ellicott City