Thoughts on this flycatcher?

[Rotarran]

Saw this Flycatcher in Markham on Saturday and was wondering what your opinions are.

This was in a field with 2nd growth nearby, not in woods.  So probably excludes Least based on that.  I'm thinking likely Alder/Willow but it's got so much dusky/olive on the sides and breast and seems yellowish overall, maybe Yellow-bellied?  But then the white chin throws me off.  Just not sure.

[Shortsighted]

Wow, shots from every angle.
There seems to be some yellow but that can be an illusion.
Fairly dark breast and flanks.
Buff wing bars make it a juvenile
Juvenile Yellow-bellied is my guess.
Any Willow/Ash FC that I've ever seen had a brighter breast and belly.

[Dinusaur]

Looks good for a Yellow-bellied Flycatcher - Willow will have thinner eye ring and not so yellow on the belly as SS pointed out. Here's photos of a Willow taken at Reesor Pond in Markham - it was definitively identified by the 'whit' sound it was making.
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[attachment=0:1iurkcsh]F30_1361b.JPG[/attachment:1iurkcsh]

[Rotarran]

Thanks all, I went back yesterday and found the same individual plus 3 more flycatchers which looked far closer to Trails' flycatcher than the one in the original post.  They're likely a family and the one pictured is probably the offspring of the nesting couple.  Also they vocalized yesterday sounding very close to Willow Flycatchers.