Pigeon Model, Big

Quick Answer: A pigeon model is a replica of the rock pigeon (Columba livia) used to teach bird anatomy, and this listing is the big version for demonstration. Zoology classes use it to show adaptations for flight, such as the keeled breastbone, large flight muscles and air-sac breathing, together with the crop and gizzard of the digestive system.

Why the Pigeon Is the Standard Bird Type

The pigeon has long been the standard bird in school and college zoology because it is common, medium-sized and a typical strong flier. A model lets a class study that body plan without a bird dissection, which many schools no longer carry out. Big in the title marks this as the larger listing, suited to showing a whole class from the front bench; its exact size is not stated, nor whether the body wall is opened to expose the organs, as in many zoology models.

Flight shapes almost every system. The sternum carries a deep keel that anchors the pectoralis muscles, which pull the wings down, and the smaller supracoracoideus, which lifts them. Many bones are hollow and strutted, cutting weight. The lungs are small and rigid, but a system of air sacs keeps air moving through them in one direction, so gas exchange continues while the bird breathes in and while it breathes out.

The digestive tract shows the other side of bird life. With no teeth, a pigeon stores and softens grain in the crop, a pouch of the oesophagus, then passes it through the glandular proventriculus to the muscular gizzard, where swallowed grit helps grind it. The gut, urinary and reproductive openings all end in the cloaca. Pigeons are also known for crop milk, a secretion of the crop lining that both parents feed to their young.

Applications

• Teaching adaptations for flight in birds: keel, hollow bones, feathers and air sacs
• Comparing the bird digestive system, with its crop and gizzard, against a mammal such as the rabbit
• Practical examinations where students identify and label the organs of a vertebrate type
• Discussing one-way airflow in bird lungs alongside mammalian breathing

Specifications

Care & Handling

• Lift the pigeon model by its base or body, never by the wings, tail or head, which are the parts most likely to crack.
• If organs are removable, return each one to its recess after the lesson and count them before storing.
• Wipe with a slightly damp cloth and dry at once; avoid solvents, which dissolve painted labels.

Why Choose LabEquip

Zoology departments usually buy a large bird model to anchor their unit on vertebrate types, often next to a mammal. LabEquip lists it in biology lab products with the rabbit model for bird and mammal comparisons, and the birds chart adds external features; questions on size go through the contact page.

Frequently Asked Questions

What is the keel on a bird’s breastbone for?

The keel is a deep ridge along the sternum. It gives a large area of attachment for the flight muscles, which are very large in a strong flier like the pigeon. Flightless birds such as the ostrich have a flat sternum without a keel.

How do air sacs help a bird breathe?

Air sacs work as bellows. Inhaled air first fills the posterior sacs, is pushed through the lungs when the bird breathes out, and leaves by way of the anterior sacs. Air therefore flows through the lung tissue in one direction during both phases of breathing.

Why does a pigeon need a gizzard?

Birds have no teeth, so they cannot chew. The gizzard is a thick, muscular part of the stomach that grinds food, helped by small stones or grit the bird swallows. Seed-eaters such as pigeons have a particularly strong gizzard.

What is the cloaca?

The cloaca is a single chamber at the end of the gut into which the intestine, the ureters and the reproductive ducts all open. Birds, reptiles and amphibians have one; most mammals have separate openings.

What is crop milk?

It is a nutritious secretion produced by the lining of the crop in both male and female pigeons. Parents bring it up to feed newly hatched squabs during their first days, a habit shared by only a few other bird groups.

Why choose the big version?

A larger model is easier to see from the back of a classroom and suits teacher demonstrations and displays. Smaller models suit group work on benches, so departments that run both kinds of lesson sometimes keep one large model at the front.

Last Updated: September 2026