http://www.whims.cc/rbg_meadowlark.htm
this is a pretty cute pattern .. its for a 13" block but you could make several or take this pattern and enlarge it to make more of a central pic?
here is another pattern I found: ( I am assuming you wanted the bird meadow lark vs the pattern itself called meadowlark which is more a star pattern?)
I think while this is a poster you could easily print this bird and cut and applique your own onto a background, with the leaves branches it doesnt appear too difficult.