Common Pheasant

The common pheasant (Phasianus colchicus) is a large ground-dwelling gamebird native from the Caucasus across much of temperate Asia. It has been introduced to many other parts of the world and is now one of the most familiar gamebirds in Europe and North America. Males are much larger and more colourful than females, often reaching 70–90 cm in total length when the long tail is included and averaging around 1.3 kg. Females are shorter-tailed, mottled brown and average around 0.95 kg.

Male plumage varies enormously. Many introduced birds have a white neck ring, but this is absent in some native forms, and European hunting populations often contain mixtures of several subspecies. The green head, red facial skin, coppery body and long barred tail remain typical features even when the exact colours and neck pattern differ.

Common pheasants are birds of varied lowland landscapes. Farmland, grassland, marsh edges, hedgerows, scrub and woodland margins can all provide suitable habitat when open feeding areas lie close to dense cover. They spend most of their time on the ground and rely heavily on vegetation for hiding and overnight shelter.

Landscape structure matters more than any single habitat type. Large open fields can provide food, but birds also need rough margins, reedbeds, hedges or scrub where they can escape predators and where females can hide nests. This combination explains why pheasants often do well in mixed agricultural landscapes but poorly in either completely open ground or continuous dense forest.

Pheasants are omnivores. Adults eat large amounts of seeds, grain, shoots, leaves, berries and other plant material, while insects, spiders, snails and other small animals are also taken. They feed mainly on the ground, scratching through soil and leaf litter and picking food from vegetation.

Animal prey becomes especially important for growing chicks. During their first weeks, young pheasants need protein-rich insects and other invertebrates before the diet gradually shifts toward more seeds and vegetation. This makes insect-rich field margins and varied ground vegetation particularly valuable during the breeding season.

Common pheasants spend most of their lives walking and running on the ground. When suddenly threatened they can explode into fast flight with loud wingbeats, but they usually fly only short distances before dropping back into cover. At night they often roost above the ground in trees or tall shrubs.

Outside the breeding season females and young birds may form loose groups, while males are often more solitary.

Breeding begins in spring. Males become strongly territorial and use loud crowing calls, wing-whirring and visual displays to advertise themselves; rival males may fight when one enters another’s breeding area. A male may mate with several females within his territory, while each female chooses and prepares her own nest.

The nest is a shallow scrape on the ground, usually well hidden in grass, crops, reeds or other dense vegetation. A typical clutch contains about 10–14 eggs, although 2–18 have been recorded. The female incubates alone for roughly 23–28 days and then leads the brood without help from the male.

The chicks are precocial: they hatch covered in down, can walk almost immediately and leave the nest soon after hatching. They can make short flights after about 11–13 days, but usually remain with the female until becoming independent at around 70–80 days.

The common pheasant has been transported far beyond its natural Asian range for hunting. Established populations now occur across much of Europe, North America, New Zealand and other regions. In many places these populations are supported or supplemented by the release of captive-reared birds.

In Britain, very large-scale releases provide a clear example of how pheasant density can have ecological effects. A 2026 study at 20 release sites in ancient woodland in England and Wales found fewer young trees and lower plant species richness close to release sites, but the direct effects detected did not extend beyond about 500 m. Soil nutrient levels also showed no clear distance gradient. The measurable effects therefore appear to be mainly local where birds occur at high densities.

In Norway, pheasants were first released at Bærum in 1875–1876 and were later introduced at many sites in southern and eastern Norway. The species is now established around the Oslofjord, on Nord-Jæren and around Lake Mjøsa, while cold, snowy winters continue to limit its success. The 2023 Alien Species List classifies it as low risk (LO).

Pheasant releases were prohibited in Norway in 2022. Since releases stopped, both observations and reported numbers have declined. Milder winters may nevertheless make more areas suitable because cold and snow are among the main constraints on the species.

The common pheasant is classified as least concern on the IUCN Red List. Its worldwide abundance is strongly influenced by introduced and managed populations, however, so large numbers in Europe and North America do not necessarily describe the condition of every native Asian population.

Habitat change and hunting can affect native populations locally, while introduced populations may be maintained partly through releases. Across much of Europe and North America, pheasant numbers therefore reflect human management as much as natural population dynamics.