Back to Nature (1991)

At a country inn, ravishing Chrissie and her uptight boyfriend Reggie are on a bird-watching expedition. But you can bet they'll discover more than titlarks and sapsuckers! On their first day out, Chrissie spots a sizzling mating ritual - of a human kind! That night, our naughty naturalist goes Back to Nature in an orgy with three guys! And that morning, she gets her feathers fluffed with a lesbian lovebird! Even stick-in-the-mud Reggie gets to flap his wings with two luscious nightingales that have him crowing until dawn! Obviously, this is one sport that has a lot more going for it than meets the eye!