warbler ID, please

[jackbreakfast]

Hello fine folks
Did I accidentally photograph an orange-crowned warbler? I'm pretty dumb about this, but I guess I'm learning. Or possibly not! Anyhow, your help would be v. much appreciated. This is only approx. 10% of the original capture so please forgive the disgusting quality. Many thanks!

[thouc]

It looks like it have some orange on the crown and yellow undertail coverts, so you are right, Orange-crowned Warbler.

[jackbreakfast]

Many thanks. From what I understand, it is a warbler one can see without knowing for certain that one has seen it? The tennessee confusion is always a possibility. But that orange in the crown, slight though it was, tipped off my semi-dim brain!

[thouc]

The undertail coverts is the safest way to tell Orange-crowned (yellow) and Tennessee (white) apart.