You give the chickens a show.

You grab at your hard on over your overalls and Jenny looks over at you.

"Are you hard?" she asks, incredulous.

"Of course I am," you admit, gesturing to the scene before you. "Look at all this."

"Aww my little brother is all grown up," Betty teases, massaging her tits. "I know you're wet too, little sister," she adds. "I used to squeeze my thighs together like that too." You glance over to your obviously horny as hell twin and she blushes furiously. She's the prettiest little thing, you suddenly think. She seems to finally come to a decision though and looks to you, shrugging. Through your twintuition you can tell she's sharing these new burgeoning feelings you are. And there's work to do right? There were eggs that needed collecting...

"If they want a show we can give them a show," Jenny says, trying to sound suggestive. It works for you at least and you start to undress. Your twin tries to do a sort of sexy strip tease... but that's a tall order when you're wearing baggy overalls.

"I think they're after a different kind of show," you say to Jenny with the corner of your mouth. The chickens are all focused on your older sister in the center of the pen, masturbating. You both nod at how goddamn hot it is. So you get naked pretty quickly and are kind of captivated watching your twin sister strip on her own. She's not doing it in any particularly sexy way, but as she sheds the baggy layers of farm clothes and reveals her firm lithe figure you feel your erection harden. The sound of Bibbi and Betty moaning as they rub themselves contributes to it.

Your younger sister's competitive nature starts to show itself now and she moves into the pen and joins in on the sapphic live show the other chickens are intently watching. She sits and spreads her legs, almost doing the splits, and shows off how wet she is, no shame at all. You realise you feel the same way too now that you're naked. Having both of your sisters here you feel... safe.

The chickens find their attention pulled to Jenny as she starts to play with herself and they murmur in appreciation.

"Sexy," one of the chickens say. It's the nearest feathered girl and she crawls closer to your sister. She has a blue coloured crest and a slightly sharper beak than the others. Piper is that chicken's name, you remember. You know all of the farmyard animals. Jenny looks up at you, eyebrows raised, and you remember you're supposed to be putting on a show too. The chickens need to been stimulated sexually... so you start manually stimulating yourself.

As you stroke your cock you sigh with relief, finally able to touch yourself. The chickens and your sisters have gotten you so worked up you think you might bust pretty fast, especially as their eyes all divert to your hardness. Piper, the one with the blue crest, moves up to your twin, wrapping her up into her feathered arms. "Touch me," she says to your sister, obviously too turned on from all of this stimulation to wait any longer. You watch your sister tentatively touch the chicken's nethers, a fluttering moan escaping the bird's throat.

"I could get used to this," you hear your sister say as she slips a finger into Piper. You get pulled away by Bibbi who's gotten to her feet.

"My sister's got eggs," she says, sitting you down next to a slightly thinner chicken. Or at least she has smaller breasts. Her thighs appear thicker, but otherwise this one looks remarkably similar to Bibbi. She has a slightly longer rest crest and also appears to be a bit more shy.

"Bobbin," you say, remembering her name. She nods crawling up to you. Her hands find your cock and she starts to stroke you. Not so shy after all. Her touch is electric, and you see her painted talons but don't have any fear. Her touch is so amazingly soft and warm. You groan.

"It's funny finally seeing you in here in the Big Barn," Bibbi says. She glances over her shoulder and your gaze follows her. Your sister Betty seems to be confident enough in your chicken raising skills to leave you be and crawls over to handle one of the remaining birds. "I see you staring when you come feed us. At these." She lifts her large tits up in her arms, squeezing them together. Your cock throbs and Bobbin hums, gripping you tighter.

"Yeah," you admit, at first wanting to avert your eyes until you realise it's fine to stare so you do. "You have nipples. I wonder why you have nipples." Bibbi looks down at her tits and her hands instinctively go to her nipples, these sharp pink nubs that she tweezes between her fingers. Bobbin wipes her beak of drool watching this exchange but doesn't speak. And it was a fair question, you thought, since birds in general don't breast feed.

"They're not really nipples," Bibbi says, still massaging them. She obviously enjoys it. "It's just how our breasts ... end?" she tilts her head in thought, her fingers running down her cleavage. "Just a result of how we evolved I guess. We hatch our chicks in between our warm tits. Tit just like growing into this shape I suppose... and to a point?" She seems unsure of her hypothesis but you nod, caring less and less about the explanation as you watch this sexy chicken playing with her breasts and her sister nuzzles the crook of your neck as she strokes your cock. Bibbi smiles proudly at how much you appear to be enjoying Bobbin's handjob skills.

The horny chicken shifts to sit in front of you, never letting go of your cock, and spreads her legs for you to see. You get a whiff of her musky hole. The heat in the barn is making things steamy in here, but the smells are not unpleasant. Bobbin in particular has a flowery scent to her. You look at her tight slit and see it glisten. You wonder how she can push such a large egg out of such small opening. Obviously you had to see how it works and put your hand against her crotch. The bird ruffles her feathers at your touch, holding her moan inside her throat. She's so incredibly damp in her downy feathers between her legs. Sliding your fingers along the slit gives you more reactions, Bobbin's head obviously her namesake as she tilts and turns her face, responding to every movement. She's so incredibly wet you realise you just want to stick something in her. She seems to have the same idea and she moves to sit on your lap, pushing her crotch against yours. Her warmth meets the underside of your cock and she continues to rub your tip with her hands.

You remember one class on chicken anatomy where you found out that birds only have one opening where everything comes out of. The organ is called a cloaca, where both eggs and waste exit the chicken. It's also where she receives fertilisation... all the one hole. You expect it might be dirtier but you see how she's leaking onto your balls. The liquid is clear and clean. She leans back a bit hips rising and pushing firmer against your shaft. At this angle you see something unexpected... a second hole beneath what you assumed was her cloaca... it looks like an anus. Bibbi notices your confused expression and her sharp eyes see what you see.

"Morphing changes us," she explains as her sister continues to grind on you. "Our cloacas become true vaginas... then we get an anus." You nod, fascinated by the science and getting incredibly turned on by the possibilities.

Your nuts are drenched by the lubrication she's discharging and you think she might be close to laying.

"I need more," Bobbin says, tongue hanging out the corner of her beak. "I need more." She grips your cock firmly one more time before letting it go completely, laying back and looking at you with pleading eyes. "Mooore...pleease?"