Big thanks to  alyxavian for giving me the opportunity to write such a fun transformation scene! This premise was already golden, and getting to bring it to life around such an absurdly hot piece of art made it even better. And now, unfortunately, I’m craving the feeling of a massive eagle bicep under my paw. Just to check the muscle density. For research. Obviously. You can find the OG post !!HERE!!

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Sirocco wiped his palms against his shorts for the third time, the cotton already damp from his nerves. He stood outside Alyx’s door, glancing up and wondering for the hundredth time if this was a mistake.

He’d never been to someone’s home gym before… let alone the home of someone like Alyx.

Alyx was… a lot.

The eagle had a reputation. Buff, confident, always strutting with that lazy smile that said he knew he could lift you in one hand. Sirocco, by contrast, was a lanky rabbit with a runner’s build and a lifetime of avoiding gym memberships. But Alyx had insisted. “Private session,” he’d said with a wink. “You’ll love it.”

Now Sirocco was here, inside a sleek basement studio that looked like it belonged on a fitness influencer’s livestream. There were mirrors, dumbbells, squat racks, resistance bands he didn’t know how to use, and of course, Alyx, standing in the middle with arms folded and that same damn grin.

“Glad you came,” Alyx said, tossing him a sweat towel. “We’ll take it slow. Promise.”

Sirocco nodded, ears twitching. “O-okay. I’m just… not sure if your workouts are maybe a little too advanced. I don’t really do weights…”

He tried not to stare too hard at Alyx's arms, but it was getting impossible.

Alyx’s grin widened. “Then we’ll start with something basic. Let’s build you right.”

The rabbit had started with a simple dynamic warm up, jumping jacks, lunges, a few awkward arm circles, but Alyx had insisted on joining in, making it look effortless!

Every time he moved, his sleeveless top clung to his biceps, stretching as those feathered arms flexed and rolled. When he laughed his chest feathers puffed out just a little. It was hard to tell if he even noticed how much space he took up, or if it was all intentional.

Probably both.

“Don’t worry,” Alyx said, stretching one massive arm across his body. “Everyone starts somewhere. You’ll get the hang of it.”

Sirocco nodded, wiping his brow again. “Y-yeah, just… haven’t really done this kind of stuff. I run, mostly. Or, like, jump fences. But I’ve never really touched weights.”

Alyx turned toward him, eyebrow raised. “Jump fences?”

Sirocco gave a shy shrug. “Y’know… big feet, rabbit stuff...”

That earned him a wide grin. “You’ve definitely got the legs for it,” Alyx said, casting an approving glance at Sirocco’s thighs. “Just gotta match the top half.”

He turned away then, walking over to a rack of dumbbells and casually selecting a pair that looked like they weighed more than Sirocco’s entire week of groceries.

With a light huff, Alyx curled them both in a smooth motion, biceps bulging under the feathers. He held the position for a moment, clearly giving Sirocco a show.

“This?” Alyx said, looking over with a smirk. “This is where the fun begins.”

The eagle moved through a short set of curls, the weights rose and fell with rhythm, his shoulders flexing under the load.

Then, as if on cue, Alyx brought both arms up in a classic flex, biceps bulging, feathers slick with sweat. “Wanna see the wingspan?” he teased, spreading wide and turning just enough to show off the way his lats tapered down to his waist.

Sirocco laughed nervously, trying to hide behind his towel. “You do this in every session?”

“Only when I’ve got someone cute watching.”

The rabbit’s heart jumped. He tried to cover it up by focusing on a pair of light dumbbells, but they felt awkward in his hands, like holding heavy vegetables. Alyx noticed.

“Try a bar instead,” he said, guiding him to the squat rack. “No weight yet, just form.”

Sirocco positioned himself under the bar, back straight, paws gripping it tight. His tail twitched. Alyx stepped close behind, adjusting his elbows gently.

“Keep it level. Chest proud. That’s it.”

The first few reps were shaky. Sirocco dipped low, then pushed up, legs straining under even the empty bar.

“See? You can do better than that.”

“Alright, now let’s add a little weight,” Alyx said, loading the bar with what looked like iron pancakes. “Don’t worry. I’m spotting.”

Alyx lifted the bar up from the hands of Sirocco, and slipped a few weights onto them. The weights, which by Sirocco’s deduction, would be way too heavy for him. “Ignore the size of ‘em!” Alyx chuckled, “I promise you’ll hit these.”

It began simple. A small warm up once more. Body squats. Controlled breathing. Alyx adjusted his posture once or twice, gently correcting him with a feathery touch to the hips or shoulder. Sirocco felt clumsy and exposed, but the eagle never laughed, never mocked. Only encouraged.

And then came the barbell once more, with the added weight.

Sirocco took position, paws trembling as he dipped under the bar. His tank top clung to him with sweat, shorts already dark at the waistband. He lowered, lifted. Lowered again.

“Good form,” Alyx said behind him, voice low. “But maybe try this…”

Sirocco barely had time to register what he meant before Alyx’s claws gently slid down his sides, then lightly pressed just under his ribs, guiding his posture. “Hold the bar above your head. Like this. Lock your arms out… yeah, there you go. Now squat.”

With the barbell held high, Sirocco felt vulnerable, unstable. His ears twitched nervously as he dipped into the motion, legs shaking… then snapped.

His feet burst, the fluffy pads of his rabbit paws spread apart as scaly flesh pushed through.

Toes curled and twisted, nails growing black and curved into lethal talons. The gym mat buckled beneath him as he involuntarily dug in. Sirocco gasped, legs trembling, but the bar didn’t drop.

He should’ve fallen. But he didn’t.

In fact… the weight felt lighter.

“Wh-what…?” he choked out, still squatting deep. His eyes were locked on his feet, no longer soft, mammalian paws, but avian, orange scaled raptor claws.

Fwump.

His biceps swelled violently under his tank top, the fabric riding high and tight as his arms bulged with sudden mass. Veins snaked over new muscle, stretching under his fur, except it wasn’t fur anymore.

Tiny feathers pushed their way through every follicle, fanning out in soft waves across his shoulders, chest, and neck. His hands, still gripping the bar, itched with pressure, his fingers elongating, nails sharpening into the same talons on his feet, ones that curled perfectly around the iron.

He wanted to drop the bar and look at himself, feel the changes, but he couldn't. Alyx was behind him, murmuring praise, his claw resting lightly on Sirocco’s back like a brand. “There you go… just breathe. You’re doing so well.”

Sirocco panted. He could feel heat rising up his spine, feathering out along his shoulder blades. He felt them unfurl in his back like stretching arms, downy at the base, strong and wide where bone met new muscle. His ears flattened, then melted back into his skull with a pulse of pressure.

His face burned. Something shifted there too.

He groaned aloud as his jaw cracked forward, muzzle pushing and reshaping into a sharp golden beak.

“H-hey, Alyx!” he gasped, voice trembling “T-take the bar, I- I can’t- I don’t-!”

The words caught in his throat.

His tongue felt too thick, too stiff, his whole throat tightening, reshaping.

“P-please I- SKWEEAAAWK!”

His body continued to grow. Thick cords of muscle twisted under his chest, making his tank top snap open at the seams. Feathers exploded outward across his pecs, some drifting lazily to the ground. His shorts hung on for dear life, waistband dragging low on his new hips, the material riding high against thighs that were now far too massive for any normal gym wear.

Another breath.

Rrrip.

“Iuuhaa- SKRAAAAWK!” Another sharp, furious burst of sound ripped from his throat, this time accompanied by a puff of feathers shaking loose from his shoulders.

“Oh yeah,” Alyx purred from behind, his claws steadying the barbell even though Sirocco clearly didn’t need help anymore. “That voice suits you.”

The waistband of his shorts split down the sides, loose fabric now caught between the swell of his feathery thighs and the curve of his new falcon haunches. His lower body was huge, thick… powerful. His tailbone lengthened, curling into an elegant plume of feathers that wagged behind him instinctively, for balance, for style.

Sirocco’s eyes flicked to the mirror in front of them.

What he saw wasn’t a rabbit anymore. It was a hulking, sweat glazed falcon, ripped from beak to tailfeather. His eyes glinted, sharp and golden, feathers still coming in patches across his chest and arms.

“I-I… I look…” he panted, struggling to find words between the heat, the rush, the dizzying power in his limbs. He adjusted the bar effortlessly overhead; it felt like nothing now, just a toy in his talons.

“You look strong,” Alyx said with a low growl, stepping behind him again and running a claw down his side. “Much better.”

“KREEEEEEE-HAWWWWK!!”

He glared at his reflection, eyes sharp and golden, filled with disbelief.

“I- I din’t- I din’ ask for this!!” he barked, voice warbling through the awkward pitch of his new throat. “You… you tricky feath’rhead!!”

Alyx raised a brow. “Featherhead? Says you.”

Sirocco barked, feathers puffed like an angry hen. “You said- you said squats, not… not transmigri-bird-i-ficashun!!”

Barbell still clutched above his head, muscles twitching and puffed with adrenaline. “I was a bunny, a real good one!! And now I’m- now I’m just… just some dumb flap’n SKWAAAAW!”

He threw the bar.

Not dropped.

Threw.

The steel barbell whistled through the air like a missile, crashing into the padded wall with a deafening BANG, bouncing twice before settling with a pitiful metallic groan. Feathers rained from Sirocco’s wings with every breath.

“I was soft and cute! Now I g- got talons and tailfluff and TOO MUCH PECK!!”

Alyx watched calmly, arms folded, that smug smirk never once leaving his beak. He stepped closer.

“I should peck your eyes out. Peck your dumb hot face off! HFF-RAAACK-” Sirocco ranted, beak clacking.

Then Alyx kissed him. Strong claws wrapped around Sirocco’s hips and pulled him forward in a sudden, powerful motion. Beak met beak in a firm hot clash.

Sirocco’s arms flared wide as the kiss deepened, his whole body tensing… then melting. Every word, every birdy squawk, every furious breath died in that moment as Alyx tilted his head and held him there.

When the kiss broke, Sirocco’s eyes were lidded, beak parted, breathless.

“…Still angry?” Alyx asked, voice soft but smug.

Sirocco blinked slowly.

“…You’re still a birdbrain.” he muttered.