I don't tend to use a field-guide. If I have an inkling of what species it "might" be, I do a Google image-search and usually that's enough to nail it. (If it's not, I throw it out to a forum.)

I KNOW there's House and/or Tree sparrows here, because the solid-capped birds are present. I just can't place the ones with the broad black streaks on top of their heads. Kind of looks like the markings you'd expect on a tabby cat.

(On a marginally related note....my God, I hate squirrels.)

Slán,

~Fionn

www.geocities.com/children_of_lir