Introduction
The Red Grouse, Lagopus scotica, is a medium-sized grouse restricted to heather moorlands in Great Britain and Ireland. It is resident rather than migratory and is strongly associated with upland heath, blanket bog and other open moorland habitats. The name Lagopus scotica is used by the IOC World Bird List, although some authorities continue to treat the bird as the British and Irish form of the Willow Ptarmigan, Lagopus lagopus.
Red Grouse are important components of upland ecosystems and have long been associated with Scottish and northern English moorland culture, including managed grouse shooting. Their abundance can vary greatly between years because of weather, disease, parasites, predation and changes in habitat condition.
Physical Description
The Red Grouse is a compact, short-tailed game bird measuring approximately 37–42 centimetres in length, with a wingspan of about 55–60 centimetres. Adults generally weigh around 600 grams, although weight varies with sex, season and condition.
Its plumage is predominantly reddish-brown, finely marked with darker barring and mottling. This provides effective camouflage among heather, bracken and peatland vegetation. Unlike most forms of Willow Ptarmigan, Red Grouse remain brown throughout the year rather than developing predominantly white winter plumage.
Males usually have a more conspicuous scarlet comb above the eye, particularly during the breeding season. Females are generally duller and more heavily barred, although individual variation can be considerable. Both sexes have feathered legs and toes, an adaptation that helps provide insulation in cold upland conditions.
Juveniles are smaller and more finely marked than adults. Their plumage is generally browner and less clearly patterned, and young birds can be difficult to distinguish from adult females at a distance.
Range and Habitat
Red Grouse occur in suitable upland habitats across Scotland, northern and central England, Wales and Ireland. They are endemic to Britain and Ireland under the species treatment that recognises Lagopus scotica as a separate species. The taxonomic treatment is not completely uniform, and some global checklists retain the bird as Lagopus lagopus scotica.
The species is most closely associated with heather-dominated moorland, especially habitats containing a mixture of young, nutritious heather for feeding and taller vegetation for nesting and cover. It also uses upland heath, blanket bog, wet heath and open hillsides with bilberry and other dwarf shrubs.
Red Grouse are usually found in open country rather than woodland. Their distribution is therefore influenced by the availability, continuity and management of suitable heather habitats. Afforestation, agricultural improvement, excessive grazing, habitat fragmentation and poorly managed burning can reduce the quality or extent of moorland available to them.
Behaviour and Diet
Red Grouse are active mainly during the day. They often remain concealed in heather until approached, then burst into flight with rapid wingbeats. Their flight is fast and low, and a flushed bird commonly gives a distinctive repeated call that is often described as sounding like “go back, go back”.
Adults feed primarily on heather, especially young shoots, leaves, flowers and seeds. They may also consume bilberry and other moorland plants. Their digestive system is adapted to process fibrous vegetation, allowing them to rely heavily on heather for much of the year.
Chicks eat plant material from an early age but also take invertebrates, including insects and other small arthropods. Invertebrate food can be particularly important for chick growth and survival in some habitats, because it provides concentrated protein during the first weeks of life.
Males establish and defend breeding territories, using calls, ground displays and short display flights. Red Grouse generally form pairs, and the female makes a shallow nest scrape on the ground, usually concealed beneath heather or other vegetation. A typical clutch contains about six to nine eggs, although larger clutches have been recorded. Incubation lasts approximately 19–25 days.
The chicks are precocial, leaving the nest soon after hatching and following the female while feeding. They develop rapidly and can usually fly at around 12–14 days old. The male may remain associated with the territory, while the female normally provides the main care and protection for the brood.
Identification Tips
- Look for a compact, brown grouse flushed from heather moorland. The bird often appears briefly before dropping back into cover.
- The rich reddish-brown plumage is retained throughout the year, unlike the largely white winter plumage of many Willow Ptarmigan.
- Males usually show a prominent red eye-comb. The comb is less conspicuous in females and may be difficult to see in poor light.
- The bird has a short tail, rounded wings and feathered legs, with white visible in the wings during flight.
- Red Grouse are usually found on open heather moorland. In the Scottish Highlands, Rock Ptarmigan are associated with higher, rockier alpine ground and show more extensive seasonal white plumage.
- The species is often detected by sound before it is seen. A sudden whirring flight from dense heather is also a useful clue.
Conservation Status
The Red Grouse is currently listed as Least Concern globally by the IUCN assessment used by major conservation databases, and it is Green-listed in the United Kingdom under Birds of Conservation Concern 5. These classifications do not mean that all populations are secure. The species has experienced regional declines and its population trend is strongly affected by cyclical fluctuations.
BTO monitoring indicates a 27% decrease in the UK breeding population between 1995 and 2024, although the species also shows pronounced short-term variation. Population cycles are associated in part with the abundance of the parasitic strongyle worm Trichostrongylus tenuis. Other diseases, including louping ill, can also affect Red Grouse, particularly where tick-borne infection is present.
Major pressures include the loss and fragmentation of heather moorland, afforestation, excessive grazing, inappropriate burning, predation, severe weather and climate-related changes to upland habitats. Management for driven grouse shooting has maintained or increased heather cover in some areas, but the ecological effects of different burning, grazing, predator-control and disease-management practices remain subjects of scientific and public debate.
Conservation measures include protecting and restoring heather moorland and blanket bog, maintaining a varied structure of vegetation, reducing habitat fragmentation, monitoring disease and parasites, and managing fire, grazing and other land-use pressures in accordance with wider biodiversity objectives. Because Red Grouse share their habitat with species such as Hen Harrier, Merlin, Golden Plover and Short-eared Owl, conservation planning should consider the wider moorland community rather than the grouse alone.
Frequently Asked Questions
Where does the Red Grouse live?
Red Grouse live mainly in open heather moorland, upland heath and blanket bog across Scotland, northern and central England, Wales and Ireland.
Does the Red Grouse migrate?
No. Red Grouse are resident birds and normally remain within or near their breeding range throughout the year, although they may move locally in response to food, weather and habitat conditions.
What does the Red Grouse eat?
Adults feed mainly on heather shoots, leaves, flowers and seeds. They also take other dwarf-shrub vegetation, such as bilberry. Chicks eat plant material as well as invertebrates, particularly during their early development.
How can a Red Grouse be identified?
Look for a compact reddish-brown grouse with a short tail, rounded wings and feathered legs in open heather moorland. Males usually have a noticeable red comb above the eye, and the species remains brown rather than turning white in winter.
How quickly can Red Grouse chicks fly?
Red Grouse chicks are mobile soon after hatching and usually become capable of sustained flight at approximately 12–14 days old.
Is the Red Grouse endangered?
The species is currently classified as Least Concern globally and Green-listed in the United Kingdom. Nevertheless, some populations have declined, and the species remains vulnerable to habitat loss, disease, parasites, predation, severe weather and changes in moorland management.
References
- British Trust for Ornithology. 2026. “Red Grouse, Lagopus scotica.” BTO BirdFacts. Accessed 8 September 2026. https://www.bto.org/learn/about-birds/birdfacts/red-grouse
- Gill, F., D. Donsker and P. Rasmussen, eds. 2026. IOC World Bird List, version 15.2. International Ornithologists’ Union. Accessed 8 September 2026. https://www.worldbirdnames.org/
- Stanbury, A. J., M. A. Eaton, N. J. Aebischer, D. E. Balmer, A. F. Brown, A. Douse, P. Lindley, N. McCulloch, D. G. Noble and I. Win. 2021. “The status of our bird populations: the fifth Birds of Conservation Concern in the United Kingdom, Channel Islands and Isle of Man and second IUCN Red List assessment of extinction risk for Great Britain.” British Birds 114: 723–747.
- Park, K. J., P. A. Evans, P. M. Buchanan, J. P. C. P. D. B. Davies and M. P. Moss. 2001. “The role of invertebrates in the diet, growth and survival of Red Grouse (Lagopus lagopus scoticus) chicks.” Journal of Zoology 254(2): 137–145. https://doi.org/10.1017/S0952836901000644
- Savory, C. J. 1977. “The food of Red Grouse chicks Lagopus l. scoticus.” Ibis 119(1): 1–9. https://doi.org/10.1111/j.1474-919X.1977.tb02039.x
- Heywood, J. J. N., D. Massimino, D. E. Balmer, L. Kelly, S. Marion, D. G. Noble, J. W. Pearce-Higgins, D. M. White, P. Woodcock, S. Wotton and S. Gillings. 2024. The Breeding Bird Survey 2023. British Trust for Ornithology, Joint Nature Conservation Committee and Royal Society for the Protection of Birds. https://www.bto.org/our-work/science/publications/reports/bbs-reports/2023
- National Parks and Wildlife Service. 2013. Red Grouse in the Owenduff/Nephin Complex. Irish Wildlife Manuals, No. 77. Department of Arts, Heritage and the Gaeltacht, Ireland. https://www.npws.ie/sites/default/files/publications/pdf/IWM77.pdf
- Animal and Plant Health Agency. 2020. GB Wildlife Disease Surveillance Partnership Quarterly Report: April to June 2020. Department for Environment, Food and Rural Affairs. Accessed 8 September 2026. https://assets.publishing.service.gov.uk/media/5f637bc0e90e0759f95cd092/pub-survrep-w0220.pdf
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