What Are Baby Pigeons Called and Why Are They Rarely Seen?

Baby pigeons are called squabs, and the reason you almost never see one comes down to a combination of well-hidden nests, an unusual feeding system, and an exceptionally fast growth rate that keeps the chicks tucked away until they look nearly indistinguishable from adults. Most urban birds raise their young in open, visible nests, but pigeons take a different approach, one rooted in their ancestry as cliff-dwelling birds. The result is that by the time a young pigeon steps into public view, it has already shed most of the features that would mark it as a baby.

The Word “Squab” and How It Is Used

The term “squab” refers specifically to a young, unfledged pigeon still in the nest. It applies from hatching until the bird is ready to leave, a period that typically lasts about four to six weeks depending on the species and conditions. The word has been in English for centuries, and you will encounter it in two overlapping contexts: ornithology and food. In culinary tradition, “squab” describes a young pigeon harvested before it can fly, prized for its tender meat. In biology and veterinary research, the term appears routinely to describe nestlings under study.¹ Unlike many other birds, where “chick” is the catch-all term for a baby, pigeons get their own dedicated word, and that word has stuck across both science and cooking for a long time.

Cliff Dwellers in the City

The wild ancestor of every city pigeon is the rock dove, a bird whose natural habitat is cliff faces, rocky outcrops, and cave-like crevices. Rock doves are colonial nesters and have been nesting on vertical stone surfaces for thousands of years across a wide geographic range.² When feral pigeons moved into cities, they essentially found an endless supply of artificial cliffs. Ledges on the undersides of bridges, gaps in highway overpasses, nooks behind air-conditioning units, recessed windowsills on upper floors of buildings, and sheltered spaces inside parking garages all mimic the rocky crevices these birds evolved to use.

A study surveying feral pigeon nesting along railway infrastructure found that nest location was closely tied to proximity to human food sources and to structural height. Pigeons favored gaps closer to railway stations and in positions that offered cover from the elements.³ These sites are, by design, places people rarely look. You walk under a bridge thousands of times without glancing at the steel beams above you. That is exactly where a pigeon has built its nest, incubated its eggs, and raised two squabs to near-adult size before they ever flutter down to the pavement you are walking on.

Nesting Habits That Keep Squabs Out of Sight

Pigeon nests are not much to look at. They are loose, flat platforms of twigs, straw, feathers, and whatever debris the birds can gather. But the nests are remarkably persistent. Research on feral pigeon nesting ecology found that about 95 percent of observed nests were actively in use and being reused across breeding cycles, while only around 5 percent were abandoned.⁴ Pigeons do not build a fresh nest for every clutch. Instead, they add material on top of the existing platform, sometimes building it up into a dense mound over successive rounds of breeding.

The standard clutch size is two eggs, and the same study found overlapping breeding in roughly 69 percent of nests, meaning a new clutch was often started before the previous round of squabs had fully fledged.⁴ This overlap means that pigeon nests are occupied almost continuously. There is rarely a gap where the nest sits empty and conspicuous. Between the concealed nest locations and the near-constant presence of an adult bird sitting on eggs or shielding squabs, the chances of a casual observer stumbling across a baby pigeon are slim.

Crop Milk and Why It Matters

One of the most unusual things about pigeons is that both parents produce a substance called crop milk to feed their young. This is not milk in the mammalian sense. It is a thick, protein-rich and fat-rich secretion produced by the lining of the crop, a pouch in the bird’s throat that normally serves as a food-storage organ. The production of crop milk is hormonally driven, primarily controlled by prolactin, the same hormone responsible for milk production in mammals.⁵

For the first few days of a squab’s life, crop milk is essentially its only food. Research on wood pigeons found that squabs were fed exclusively on crop milk for the first three days, with environmental foods gradually mixed in afterward.⁶ This dependence on crop milk is a big part of why squabs stay in the nest so long. Unlike songbird chicks, which beg for insects that a parent brings back from foraging trips, pigeon squabs rely on a secretion that can only be delivered by direct contact with a parent’s crop. The squab pushes its bill inside the parent’s mouth, and the parent regurgitates the crop milk directly. There is no way for the squab to feed itself. It is completely dependent on the adults in a way that anchors it to the nest.

The nutritional profile of crop milk has drawn scientific interest because it is so rich in protein. Research has shown that dietary supplementation with certain amino acids can increase the protein content of crop milk and boost squab growth rates, suggesting that the quality of crop milk directly limits how fast squabs develop.⁷ This tight nutritional link between parent and offspring is one more reason squabs do not venture out early. They physically cannot obtain the food they need anywhere else.

How Fast Squabs Grow

Squabs hatch looking almost nothing like adult pigeons. They are pink, mostly featherless, with closed eyes and oversized beaks. They are so alien-looking that if you did see one, you might not recognize it as a pigeon at all. But the transformation from hatchling to near-adult is remarkably fast. Within the first week, a squab begins growing pin feathers. By two weeks, it is covered in a mix of down and emerging flight feathers. By about four weeks, most of the adult plumage is in place, and the bird is approaching adult body weight.

Research on artificial feeding of squabs measured body weight at 28 days of age under various dietary conditions and found that squabs at that point had already reached sizes comparable to adult birds depending on diet quality.⁸ The growth trajectory in wood pigeons is similar, though it can vary by season. Squabs hatched in late June grew more slowly than those hatched in August and September, and many of the June-hatched chicks died in the nest from apparent malnutrition, likely because food availability was lower at that time.⁶

This rapid growth is the other half of the invisibility equation. By the time a young pigeon finally leaves the nest, usually somewhere between 30 and 45 days old, it is roughly the same size as its parents. It may look slightly scruffier, with a duller or less iridescent neck, and its cere (the fleshy area above the beak) may appear smoother and less pronounced. But at sidewalk-level, standing among adult pigeons, it blends in almost completely. You have almost certainly seen juvenile pigeons without realizing they were young.

Spotting a Juvenile Pigeon in the Wild

If you know what to look for, young pigeons that have recently fledged do have a few subtle giveaways. Their eyes tend to be darker, often a uniform brown or grey, whereas adult pigeons typically have orange, red, or yellow irises. The iridescent sheen on the neck feathers, that familiar green-and-purple shimmer, is usually muted or absent in juveniles. The cere and the skin around the eyes may look smoother and lighter compared to the rougher, more developed waxy cere of an adult. And behaviorally, newly fledged pigeons can appear slightly uncertain in crowds, less confident about navigating foot traffic or competing for crumbs.

These differences are easy to miss at a glance. This is part of why the myth persists that baby pigeons do not exist. They do exist, in large numbers, but by the time they enter human awareness, they have already crossed the visual threshold into looking “adult enough” that most people walk right past them.

Year-Round Breeding and the Pigeon Population Engine

Pigeons breed prolifically by bird standards. In temperate climates, they can breed year-round if food is available, and urban food supplies rarely run short. Each pair typically produces a clutch of two eggs, and as noted earlier, overlapping breeding means a new clutch often starts before the previous squabs have fledged. Research on managed pigeon populations found that when eggs were removed from nests, breeding pairs shortened their egg-laying cycle dramatically, from about 11 weeks down to roughly 4 weeks, suggesting the birds compensate for reproductive losses by ramping up their output.⁹

This relentless breeding pace means that at any given time in a city, thousands of squabs are sitting in hidden nests across the urban landscape. Pigeon pairs may produce five or more clutches in a single year under favorable conditions. Each pair is effectively a small factory running continuously, which partly explains why urban pigeon populations are so robust despite predation, disease, and human control efforts.

Diseases That Squabs Face Before Fledging

Not every squab makes it out of the nest. Young pigeons are vulnerable to a range of illnesses, and mortality during the nestling period can be significant. A veterinary survey of pigeon diseases documented that parasitic infestations were the most common health problem, affecting about 32 percent of sick birds examined, followed by salmonellosis at around 20 percent and pigeon pox at roughly 19 percent.¹⁰ Canker, caused by the protozoan parasite Trichomonas gallinae, is another common killer of squabs, producing yellowish lesions in the throat and crop that can block feeding entirely.

These diseases can sweep through a colony, especially in densely packed nesting sites with poor ventilation, which describes many urban pigeon colonies perfectly. Squabs are particularly vulnerable because their immune systems are still developing and because the close contact involved in crop milk feeding provides a direct route of transmission from parent to offspring. A parent carrying Trichomonas, for instance, can pass the parasite to its squab during every feeding.

Seasonal variation also matters. Pigeon pox tends to peak during warmer, humid months, and malnutrition is a greater risk when food quality drops. The wood pigeon data showing elevated nestling mortality in late June, likely due to poor food supply at that time, suggests that timing is critical for squab survival even in wild populations.⁶ Squabs that hatch during periods of abundant food have better feather growth, higher body weight, and a much better chance of reaching fledging age.

What to Do If You Find a Squab

On rare occasions, a squab does end up on the ground before it is ready. A nest might collapse, or a squab might be pushed out by a sibling or dislodged by wind. If you encounter a featherless or barely feathered baby pigeon, it is in serious trouble outside the nest, because it cannot thermoregulate and it cannot feed itself. In this situation, the best course of action is to contact a local wildlife rehabilitator. Squabs need frequent feedings of a warm, protein-rich formula delivered by syringe, and getting the consistency and temperature wrong can cause aspiration and death. This is not a job for improvisation.

If the squab is mostly feathered and seems alert but reluctant to fly, it may be a fledgling that is in the normal, awkward stage of learning to use its wings. These birds are often best left alone, as a parent is typically nearby and will continue feeding the youngster on the ground for a short time. The exception is if the bird is in immediate danger from traffic, cats, or other hazards, in which case moving it to a nearby elevated surface (a low wall, a planter ledge) gives it a better chance while keeping it close enough for the parents to find it.

Pigeons and Other Birds That Produce Crop Milk

Pigeons are not the only birds that produce crop milk, but they are by far the most familiar ones that do. Flamingos produce a similar secretion from their upper digestive tract, and male emperor penguins can produce a crop-like substance to tide a chick over until the mother returns with food. But among birds that live alongside humans, pigeons are unique in relying so heavily on this system during the nestling period.

This reliance on crop milk may help explain why pigeons raise relatively small broods. With a standard clutch of two eggs, both parents share feeding duties, and the energy cost of producing crop milk is substantial enough that raising even two squabs at once can cause measurable weight loss in the adults.⁷ Research has examined whether pigeon pairs can successfully raise three squabs instead of two, and the findings suggest that performance drops when the brood exceeds the standard size.¹ The crop milk system, for all its nutritional advantages, imposes a natural cap on how many offspring a pigeon pair can rear at once. This keeps brood sizes small, nesting periods compact, and squabs invisible to anyone not actively peering into crevices with a flashlight.

How Urban Design Accidentally Perfects the Hiding Spot

There is an irony in the fact that modern cities, designed and maintained by people who generally consider pigeons a nuisance, provide nearly ideal nesting conditions for the species. Concrete overhangs, steel I-beams under bridges, ventilation gaps in parking structures, and recessed ledges on older buildings all offer the combination of shelter, elevation, and enclosure that pigeons seek. Anti-pigeon measures like spike strips and netting have been installed on countless buildings, but pigeons are adaptive and opportunistic. They will nest behind a broken section of netting or find a ledge the spikes do not cover.

The proximity of nesting sites to food sources reinforces this pattern. Pigeons that nest near railway stations, outdoor dining areas, and public squares have shorter foraging trips, which means they can return to the nest more frequently to feed their squabs.³ The more convenient the food supply, the more productive the nest. And the more productive the nest, the more squabs grow up hidden in the infrastructure around us, emerging as seemingly fully formed adults that appear to have materialized from nowhere. The city is, in effect, a pigeon nursery that keeps its doors closed to everyone except the birds themselves.