This Is A First !

Not far from Quabbin gate on the ride home this morning I spotted this doe and it's bird friend standing about 200 yards deep in a field. The deer was behaving a little strange. I'll bet it had a fawn laying in the grass in close proximity. This is a first time ever seeing a bird sitting on a deer's back. I'm guessing its a female Red Winged Black Bird. I kept my distance , clicked a few pics and moved on.
Jim