A quiet, solemn boy who worries a lot. Aiden had regular nightmares and intermittent sleepwalking, screaming in the night, until one night he dreamed about space-whales. After that, they stopped.
Four years later Aiden worries less and plans what to do about it more. Further, he wanted to get people working together.
Was noted to have a habit of giving things lame names, with his cape name and the name of his eagle being prime examples.
Tattletale took Aiden on as her protege, and taught him about things; about what specifically is unspecified. He grew accustomed to people swearing from being around Tattletale's men. Aiden admired and loved Tattletale, but didn't want to end up like her or Imp.
Despite being on opposing sides, Kenzie and Aiden got along well when they met. Against Tattletale's wishes, Aiden visited Kenzie in the hospital after she was shot, and leaked Tattletale's files to Breakthrough.Antares and Tattletale eventually agreed upon a plan for the two young capes to communicate.
Aiden got along well with some of the Heartbroken, considering Candy and Darlene to be some of his favorite people. Darlene had a crush on him and was jealous of Kenzie. They did seem to torment him to some degree, however, playing 'kissing tag' with him, apparently to test his character.
Aiden thinks that Rain is a total badass. Rain, in turn, thinks of him as a good kid, questioning his choice to be a villain when they first met
He is still young and small with typical bad posture. He carried a pigeon with him when he first got his powers, later he is accompanied by flocks of birds. He has red-brown hair, in a fauxhawk style.
His costume consists of a coat and face mask. The mask is full-face, with a red crest on top, two black dots for eyes set low on the mask and a small beak.  The coat has coat tails with a feather cut to look like bird wings. He has reinforced padding straped on his clothing to accommodate larger birds of prey.
Abilities and Powers
He can see through birds' eyes when he isn't controlling them and, when he is controlling them, the birds go where he 'pushed' and moved away from where he 'pulled'. He cannot control them individually, rather he sets 'invisible flags' or rally points where birds get pulled towards. Alternatively, this can be used to make the influenced birds move in a wave, told to attack targets on their way and similar actions. His control was fine enough to make an individual pigeon hop from one knee to the other, then back again.
He was later seen controlling a flock of birds, and can likely control full flights of such. He gained a large amount of firepower when he was given "Chicken Large".
Aiden triggered with a bud of Taylor's Administrator Shard that allows him to control small simple life forms. In his case, birds.
His full history is unknown but he was presumably the son of Brockton Bay natives.
↑Kenzie’s source had given us some information. Photos of bulletin boards, with some more photos of notecards, all with Tattletale as the dubious source, I had the PRT data from Dragon, I had my notes from the Patrol, and I had my own notes. - Excerpt from Blinding 11.3
↑“Fine. I’ll agree to that. But Chicken Little is still grounded. He can’t talk to his friends on the phone.”
“I’ll cut twenty percent off his sentence of being grounded forever,” Tattletale said. She glanced back at Chicken Little, who ducked his head.
“Seriously,” I said. “At limited times per day. Or a limited number of messages,” I suggested.
I heard Kenzie groan behind me.
“That would be workable,” Chicken Little muttered, barely audible.
“Feathers and chat. Some meetings allowed if they’re both on good behavior. I’ve read her rap sheet, and I want to make sure he’s protected.” - Excerpt from Blinding 11.3
↑“I’m not confused. I really do like it, and I’m glad other people do too. I get being jealous.”
Darlene dropped one of the makeup things.
“Oh, whoops, foot in mouth,” Kenzie said. “Can I blame the pain drugs?”
“No,” Darlene said.
“You can blame the drugs,” Candy said, giving Kenzie’s lap a pat.
↑“You lost to the Heartbroken. Samuel wanted to see what you were made of, I didn’t say no. Maybe that’s not fair, maybe his idea of a good test is screwed up because the asshole that spawned him was flinging him into situations against capes and cops before he could even read. Most of the rest of them are like that. They were cannon fodder, they were punching bags, they were slaves to make and bring food… nothing about that was healthy or good for anything except making them very, very dangerous.”
“I like some of them,” Chicken Little said, pronouncing ‘some of them’ with a mumble that turned it into ‘sumblum’. - Excerpt from Interlude 10.x II
↑The fact that everyone was waiting for the hooded executioner to lead the kid villain away gave me a chance to observe and think- he wasn’t good at projecting his voice. His frame was more similar to Kenzie, but he slouched some like Chris did. Chris, though, had a natural volume, possibly because of subtle changer effects. I felt an urge to coach him, and correct something that seemed so obvious, which might have been why I was fixated on it. - Excerpt from Pitch 6.8
↑ 17.017.1And then Chicken Little, who couldn’t come off as anything but a kid, when surrounded by so many others who seemed so bad at acting like regular kids. The amusing thing was, he was showing off more power than the others, with three birds perched on his shoulders, where his red jacket had straps arranged to be extra padding and grip-points for talons. But he didn’t seem more powerful. - Excerpt from From Within 16.6
↑Hard, round, circular, with two back dots for eyes, a red crest at the upper center, and a small beak. - Excerpt from Interlude 10.x II
↑Chicken Little reached into the front pocket of the coat that had been built into his costume- it had tails at the back like an old fashioned coat, but the tails had a feather-like cut to them, like a bird’s folded wings. His mask was full-face, with beady black eyes set fairly low, in a way that made the forehead and the crest at the top stand out more.- Excerpt from Polarize 10.6
↑ 21.021.1Writebow: Can't control them indviidually
Writebow: Sets invisible flags. Birds get pulled to that point.