Most often, the mother begins to carry twins, and one of the twins is a changeling. There are extremely rare cases of being born alone, or as part of triplets. In the rarest of cases, the other twin is a hag.
Most changelings don't know they're changelings.
Though they may always feel somewhat different or removed from human life, most changelings are too young to understand who they truly are.
Changelings are largely equine in appearance but possess insect-like characteristics. They have black, carapace-like, furless exteriors, webbed manes and tails, blue non-reflective eyes (unlike their queen's), fangs, bent horns, jagged ears, insect-like wings, and holes in their legs.
Changelings cannot alter themselves enough to change physical sizes (i.e, changing from Medium to Small, etc). It is worth noting that while a changeling could technically shift into something like an aarakocra, their wings would be non-functional.
Changeling blood is green, unlike most other animals. Changelings, despite their thinly and seemingly fragile frame, are capable of surviving otherwise fatal injuries thanks to their magical abilities.
The short version is that a Changeling can shapeshift to a form that can produce sperm to impregnate someone, and can shapeshift to a form with a uterus and eggs to get pregnant, but a pregnant Changeling cannot shapechange to a form without a uterus without ending the pregnancy.
Most often it was thought that fairies exchanged the children. In rare cases, the very elderly of the fairy people would be exchanged in the place of a human baby, so that the old fairy could live in comfort, being coddled by its human parents.
They have large colorless eyes circled by thick black rings. Their hair color is most commonly a light shade of silver followed by platinum and blonde. In rarer cases, their hair can be pale shades of green, pink, and blue. Similar to elves, changelings lack body and facial hair.
Changelings born from two changeling parents are born in their natural form: pale, slender, with colorless eyes and white hair.
As for being tattooed, changelings can definitely be tattooed, and they can just as easily erase the tattoo with a moment's thought.
Unlike doppelgangers, which are entirely genderless, a changeling does have a default gender that manifests in adolescence, but each changeling can adapt his or her form to be of either gender, hermaphroditic (both genders simultaneously), or entirely genderless.
Halflings are a rare species that occurs when a faerie fraternizes with a human. These hybrids possess limited fae powers and have high attraction to and from the supernatural. They also have "fairy godparents" to protect and guide them.
By RAW changelings revert when they DIE but not when they are unconscious (it would be hard to maintain a long term masquerade if you revert when you sleep!). I bet suggested that a piece of a Changeling — such as cut hair — WILL revert, but that this is slow and may take up to 24 hours.
Changelings don't inherently recognize each other. If they don't want to be recognized then when they do something suspicious it would be an insight check against the changelings deception, which the changeling has advantage on. A changeling could have expertise in insight from divergent persona.
Changelings typically have large eyes with narrow pupils, ranging in color from white, to yellow, to black. Hair colors are similar: Light grey, platinum blonde, shades of silver, all the way to the darkest hair color being a light brown.
In their true form, changelings are generally extremely pale, showing features devoid of distinctive details, with colorless eyes and silver-white hair.
Changelings have an interesting relationship with gender as a concept, which is probably part of the reason a lot of the art doesn't find it necessary to distinguish the males with facial hair. As they're changelings though, they can have any kind of hair they want.
A changeling can eliminate or add traditional physical disfigurements - such as scars or birthmarks - when changing shape.
Changelings are a species of elf-like demons with pale skin and pointy ears. They are connected to the forests in which they dwell. Changelings are known to place their young in the homes of mortals so they can grow up in safety.
If the changeling has lost a limb, the limb is missing in every form they take. If they haven't lost a limb, every form they take has all the limbs the changeling normally has.
If you're Irish, you know your child is a changeling if it's sickly and doesn't grow in size like a normal child. Another fairly obvious sign is if it grows a beard or has long teeth. Finally, your child might be far more intelligent than other kids that age, and possess unusual insight.
In this adaptation, there are six types of fairies: Fire, water, earth, light, air, and mind. Of the ladies in the Winx suite, there is one of each; except for earth, which Terra and Flora share a knack for with the rest of their family.
pixie, also spelled pixy, in the folklore of southwestern England, tiny elflike spirit or mischievous fairy dressed in green who dances in the moonlight to the music of frogs and crickets. Its favourite pastimes are leading travelers astray and frightening young maidens.
Appearance. In their true form, or their form "at rest", changelings have pale skin, colorless eyes that can be completely white or completely black, and white or silver-white hair.
Changelings can reshape themselves to look like anybody, there's a few minor limits there but for the most part you can look like whoever you want! Changelings tend to form “personas”, full identities that they live with for extended periods of time.