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Wattled Crane Bugeranus carunculatus
BirdLife is updating this factsheet for the 2016 Red List
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Although it is known that there have been some population declines, there is limited and conflicting information on trends for this species, even in key areas. Until better data can be obtained, it is listed as Vulnerable since it has a small population which appears to have undergone a rapid decline which, with threats continuing or increasing, is projected to continue.

Taxonomic source(s)
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

Taxonomic note
Grus carunculatus (Sibley and Monroe 1990, 1993; AERC TAC 2003) has been transferred to the genus Bugeranus, a treatment adopted by Dowsett and Forbes-Watson (1993) and Collar and Andrew (1988),

Bugeranus carunculatus Collar and Andrew (1988), Grus carunculatus (Gmelin, 1789)

175 cm. Very large crane. White neck and breast. Light grey wings and back. Charcoal underparts and tail. Secondaries extend nearly to the ground, giving the appearance of a long tail. Grey cap with a distinct red facial patch which extends along the front of two large wattles covered in white feathers. Sexes alike, although males tend to be larger. Voice Far-carrying kwaarnk bugle-call, but usually silent. Similar spp. Blue Crane A. paradisea smaller with blue-grey neck. Hints Invariably in pairs (or trio with young bird). Whilst the species is territorial when paired, it can be seen in large 'floater' flocks. Most easily seen in Ethiopian highlands, Okavango Delta (Botswana), Kafue Flats, Liuwa Plains and Bengweulu Swamps (Zambia) and central areas of Kwazulu-Natal (South Africa). It feeds mainly on tubers and rhizomes of aquatic vegetation, but also on large invertebrates and small vertebrates (Archibald and Meine 1996; Burke 1996).

Distribution and population

Bugeranus carunculatus is found in Ethiopia, (c.200 [Beilfuss et al. 2003, 2007]), Tanzania (c.200 [Beilfuss et al. 2003]), Democratic Republic of Congo (probably around 500 [Beilfuss et al. 2007]), Zambia (c.4,500 [Beilfuss et al. 2007]), Angola (c.500, perhaps declining [W. R. J. Dean in litt. 1999, Beilfuss et al. 2007]), Malawi (c.15 pairs [F. Dowsett-Lemaire in litt. 2000, H. G. Msiska verbally per J. Haugaard in litt. 2000] or 40 individuals [Beilfuss et al. 2003]), Mozambique (c.300 [Beilfuss et al. 2007], 120 pairs in the Zambezi Delta region [Bento et al. 2007]), Zimbabwe (c.200 [Beilfuss et al. 2007]), Botswana (c. 111 breeding pairs in a total of 1,300 individuals [Gibson et al. 2002, Beilfuss et al. 2003, Beilfuss et al. 2007]), Namibia (c.250 birds [Beilfuss et al. 2003] including probably fewer than 10 pairs [R. E. Simmons in litt. 1999]), and South Africa (c.235 [Hancock et al. 2003, Mattison 2004, Pittman 2007], with a 35% decline in 20 years [Pittman 2007], but possibly stable since Mattison 2004]). The total population appeared stable from the mid-1980s to mid-1990s (Burke 1996), however when estimates from the 1980s are compared with those from 2006, it is judged to have declined significantly (Morrison and van der Spuy 2006), perhaps indicating declines in the last 10 years. The key Zambian population at the Kafue Flats reportedly fell in the mid-1990s (Archibald and Meine 1996; Burke 1996) and was estimated at c.1,000 individuals in 2002 (Kamweneshe and Beilfuss 2002). The comparison of 2002 estimates with those from 1993 suggests marked declines in Mozambique, Zambia and possibly Botswana (Beilfuss et al. 2007). The substantial reduction in numbers since 1993 apparently reflects real declines at individual sites and regions, although the 2002 estimate may be influenced by an improvement in accuracy relative to previous estimates (Beilfuss et al. 2007). Following declines in Zambia the Okavango Delta in Botswana may now hold the largest single population, of c1,300 birds (Hancock 2008). The world population has been variously estimated at 7,700 individuals (Pittman 2007) or fewer (Morrison and van der Spuy 2006, Motsumi et al. 2007), not more than 8,000 individuals (Beilfuss et al. 2007) and 6,000-8,000 individuals (Beilfuss et al. 2003). It exists in three disjunct populations, the large south-central population and small Ethiopian and South African populations (Jones et al. 2006; Pittman 2007), which may be relicts from its former range (Beilfuss et al. 2003).

Population justification
Its present world population has been variously estimated at 7,700 individuals (Pittman 2007) or fewer (Morrison and van der Spuy 2006; Motsumi et al. 2007), fewer than 8,000 individuals (Beilfuss et al. 2007) and 6,000-8,000 individuals (Beilfuss et al. 2003), which is the estimate used here. This roughly equates to 4,000-5,300 mature individuals.

Trend justification
When estimates from the 1980s are compared with those from 2006, the species is judged to have declined significantly (Morrison and van der Spuy 2006), indicating declines in the last three generations. The comparison of 2002 estimates with those from 1993 suggests marked declines in Mozambique, Zambia and possibly Botswana (Hancock et al. 2003). The total population was recently stated to be in decline in nine range states (Beilfuss et al. 2007). The overall rate of decline is estimated to be rapid.

Behaviour This species is generally not migratory but those that inhabit seasonal wetlands are irregularly nomadic in response to water availability (del Hoyo et al. 1996). The Ethiopian population, however, does appear to migrate locally (Archibald and Meine 1996). It breeds in May-October, leaving the breeding area in November-December when the wetlands dry up, and returning with the rains in May-June (Archibald and Meine 1996). Other populations breed in territorial pairs (Hockey et al. 2005) between July and December with a peak during the months of August and September coinciding with the peak of the floods (Archibald and Meine 1996). The most southerly populations often breed a little earlier in July-August (Archibald and Meine 1996). During the non-breeding season the species is fairly congregatory, occurring regularly in flocks of 10-50 individuals (Johnsgard 1983), and there are reports of flocks of up to 1000 in the Okavango delta in April-May (Hockey et al. 2005). Habitat In South Africa this species was found to occupy large home ranges of approximately 16 sq. km, which consist largely (75%) of grassland with a small core of essential wetland breeding habitat (McCann and Benn 2006). Breeding It nests in shallow sedge-dominated wetlands, often above 2000m altitude (del Hoyo et al. 1996). In South Africa and Zimbabwe it breeds on undisturbed small permanent wetlands surrounded by grassland or miombo (Brachystegia) woodland in high rainfall areas with plateau topography (Hockey et al. 2005), where human disturbance is minimal (Archibald and Meine 1996). Ephemeral and seasonal wetlands may be used opportunistically by breeding pairs or serve as important post-breeding dispersal areas (Archibald and Meine 1996). In South Africa it relies on relatively undisturbed mid-altitude wetland-grassland mosaics (McCann and Benn 2006). Elsewhere in its range it breeds on large low-lying tropical, seasonal flood plains such as the Okavango delta (Hockey et al. 2005) where wetlands are bordered by grasslands (Archibald and Meine 1996). It may use man-made habitats such as dams (Hockey et al. 2005). The Ethiopian population uses high-altitude wetlands in the Bale Mountains (Archibald and Meine 1996). Non-breeding During the non-breeding season the species continues to rely on wetland habitats surrounded by grassland (McCann and Benn 2006). It congregates at large wetlands on riparian floodplains, but also requires pristine or semi-pristine, high-altitude wetlands and grasslands in some places  (Archibald and Meine 1996; Barnes 2000; Mitchell et al. 1998). It frequents dambos (depressions), permanently isolated wetlands (Morrison and van der Spuy 2006) and vleis (Hancock et al. 2003) as well as using grasslands, pastures, and occasionally cultivated fields for foraging (Hockey et al. 2005). Dams and pans are used as roosting sites during the non-breeding season (Hockey et al. 2005). The Ethiopian population is less dependent on wetlands during this season, generally moving to drier, lower elevation habitats including ploughed fields (Archibald and Meine 1996). Birds that breed in the Okavango delta often move to recently burnt ground in the dry season (Hockey et al. 2005). Diet The species feeds on rhizomes, roots and bulbs of sedges (Cyperus and Eleocharis species, Bento 2002), and grass sward and seed (Hockey et al. 2005). It will also take animals including small aquatic snails, fish and frogs (Hockey et al. 2005). Chicks are reported to eat insects (Hancock et al. 2003). Breeding site Preferred nesting sites are where grass and sedge marshes are bordered by drier, flat to sloping grassland meadows, with medium height vegetation and water up to 1m in depth (Johnsgard 1983). The nest is a large mound of plant material (reeds and sedges), one metre in diameter and protruding 20 cm above the water surface, usually with a moat of open water about a metre in diameter around it. A significant proportion of nests in the Okavango Delta are on small mud islands two or three metres in diameter, exposed by 20-30 cm as floodwaters recede, and in these cases, the eggs are laid on few pieces of reed or sedge stems. Fidelity to the previous year's nesting area is suspected. The clutch size is one or two (68% and 32% of nests respectively, in Botswana) (Hancock et al. 2003), however only one chick is raised from clutches of two and the other egg is abandoned (Pittman 2007). If a clutch or chick is lost, pairs may attempt to breed again (Hancock et al. 2003). The incubation period is 33-36 days (Hancock et al. 2003). Natural levels of nest predation appear to be high (Nkape 2004). The first-hatched chick leaves the nest on its first day (Hancock et al. 2003; Nkape 2004), and may be particularly susceptible to predation at this time (Nkape 2004). The fledging period is 135 days, but immature birds usually accompany their parents for their first year (Hancock et al. 2003). Reproductive maturity is reached at about the age of seven and the species is monogamous, pairing for life.

The primary threat is loss and degradation of wetlands as a result of upstream river regulation, intensified agriculture, drainage, invasive species such as Mimosa pigra, and rice cultivation (Burke 1996; W. R. J. Dean in litt. 1999, Kamweneshe and Beilfuss 2002, McCann and Benn 2006, Morrison and van der Spuy 2006). Other threats include nest disturbance (P. Leonard in litt. 1999; P. Mundy in litt. 1999 ; McCann and Benn 2006), grass-burning regimes (M. Herremans & R. E. Simmons in litt. 1999, T. Dodman in litt. 2000, Morrison and van der Spuy 2006), though in the non-breeding season burnt floodplains are used for feeding in some areas, (Hancock et al. 2003), poisoning, collision with utility lines (Burke 1996), direct consumption of chicks (Ngwemyama in litt.) persecution, and traditional medicine (A. Shimelis in litt. 1998). Increasing livestock, wars, desertification and agrochemicals are additional threats to the species's habitats (Morrison and van der Spuy 2006). Nest destruction through trampling by livestock is believed to be a problem (Morrison and van der Spuy 2006). The population is threatened by the illegal removal of eggs and chicks for international trade (Pittman 2007). Adults are also taken for trade and are hunted (Morrison and van der Spuy 2006). The level of exports from Tanzania is believed to exceed known legal exports (Morrison and van der Spuy 2006). The destruction of vegetation by fires probably leaves adults more susceptible to predation and hunting, and flood levels in turn influence the extent and intensity of fires (Morrison and van der Spuy 2006). Recent potential threats that could extensively affect a large portion of the Okavango Delta include the proposed hydroelectric scheme at Popa Falls in Namibia, papyrus cutting, channel modification, and the extensive aerial spraying of pesticide to eradicate the tsetse fly (Hancock et al. 2003). The extent of suitable breeding habitat in the Zambezi Delta (Mozambique) and Kafue Flats (Zambia) and the suitability of remaining habitat for feeding is believed to have declined as a result of the interruption of the natural flooding regime by the Cahora Bassa (Tete province), Kariba (Zambia/Zimbabwe), and Itezhi-tezhi (Zambia) dams upstream, and hunting is also a threat in this country (Parker 2005, Bento et al. 2007).Breeding success appears to be low in the species (Hancock 2003, Mostumi and Hancock 2004b). A pre-fledging chick:adult ratio of 5.8% on the Okavango Delta in January 2003 indicates a low chick survival rate (Hancock 2003). However, each pair of this long-lived species needs to raise only two chicks that survive to adulthood over the course of their lifetimes for the population to remain stable (Hancock et al. 2003). The species is highly sensitive to human disturbance and may abandon home ranges which are impacted by adjacent land-use (Morrison and Bothma 1998).

Conservation Actions Underway
CITES Appendix II. CMS Appendix II. Protected areas (including Ramsar Sites) have been established in several key wetlands, notably in Zambia, Namibia and Botswana (Burke 1996; T. Dodman in litt. 2000). A major environmental flows initiative is underway for the Zambezi River basin, addressing the restoration of natural flooding patterns, conservation of basin wetlands, and control of invasive species in the Zambezi River basin (Beilfuss and Brown 2010).  Key wetlands targeted by the program include the Kafue Flats, Zambezi Delta, Liuwa Plain, Busanga Swamps, and others, covering about 40% of the global Wattled Crane population.   The initiative is a partnership between Zambezi basin dam operators and water authories, NGOs (World Wide Fund for Nature, International Crane Foundation), universities in the basin countries, and other stakeholders. In South Africa, and some other countries, action has included legal protection, marking and relocation of powerlines, awareness programmes, and encouragement of habitat protection, security and management by private landowners (Archibald and Meine 1996; Barnes 2000 ; Burke 1996). In the Kafue Flats, more than 800 ha of invasive Mimosa pigra was eradicated through aerial spraying and community-involvement in manual cutting (Shanungu 2009). A conservation group conducted aerial surveys, field research and a community awareness programme in the Kafue Flats (Kamweneshe and Beilfuss 2002). Aerial surveys, nest monitoring (Hancock 2003; Motsumi and Hancock 2004a; Nkape 2004) and monitoring of adult:juvenile ratios (Hancock 2003; Mostumi and Hancock 2004b) took place annually on the Okavango Delta in the early 2000’s. In 1993, an action plan was developed for the species at the African Crane and Wetland Training workshop (Beilfuss et al. 1996). A continent-wide programme for the species was launched in 2001 to monitor the species's status and threats, and help develop effective conservation programmes for the management of wetland systems (Morrison and van der Spuy 2006). National conservation plans have been developed for Botswana, Namibia, South Africa and Zimbabwe, (Morrison and van der Spuy 2006). Following a workshop in July 2000, the Wattled Crane Recovery Programme was initiated for the South African population (Morrison and van der Spuy 2006; Pittman 2007). There are currently five partners in this South African programme, one aim of which is to establish a viable captive population and supplement the wild population (K. Morrison in litt. 2012). The Johannesburg Zoo has also built a dedicated chick-rearing facility, and several captive management facilities throughout South Africa now participate in the breeding programme (Pittman 2007). In 2005, it was announced that a veterinary fence would be constructed to the east of the Makgadikgadi Pans National Park in Botswana, effectively extending the park boundary and protecting grasslands used by the species from the high density of livestock in the area (BirdLife Botswana 2006). Conservation Actions Proposed
Develop a coordinated range-wide action plan (P. Robertson in litt. 1998). Re-operate large dams to restore flooding in key Wattled Crane habitats, including Kafue Flats and Zambezi Delta (Beilfuss and Brown 2010). Coordinate range-wide surveys and long-term monitoring (Burke 1996), partly in order to understand population movements between sites and countries T. Dodman in litt. 2000). Continue and expand ecological research (Burke 1996; S. J. Tyler in litt. 1999 ; Hancock et al. 2003) and support the establishment of a captive breeding population.  Strengthen key protected areas, especially in the Kafue Flats, Liuwa Plain,and Bangweulu Swamps (Zambia) and Zambezi Delta (Mozambique) (Burke 1996; Beilfuss et al. 2007). Improve protection of birds outside of protected areas such as the Jao/Boro rivers of Botswana (Gibson et al. 2002). Increase educational campaigns (A. Shimelis in litt. 1998), targeting landowners with breeding cranes (Burke 1996). Employ satellite tracking to study the species's movements across its range (BirdLife Botswana Crane Working Group 2004; Morrison and van der Spuy 2006). In South Africa, work with farming communities to conserve natural grasslands that surround wetlands (McCann and Benn 2006). Investigate whether the South African (Morrison and van der Spuy 2006) and Ethiopian (Jones et al. 2006) populations represent separate subspecies. Assess the levels of legal and illegal trade in the species (Morrison and van der Spuy 2006). Continued (second phase) aerial spraying and manual control of Mimosa in the Kafue Flats (Shanungu 2009, per R. Beilfuss & K. Morrison in litt. 2012). Assess the impacts of fire and management on the species (Morrison and van der Spuy 2006). Study the impact of indigenous game compared with domestic cattle (Morrison and van der Spuy 2006). Plan and conduct research into semen cryopreservation, genetic fingerprinting, eggshell membrane sexing and nutrition (Morrison and van der Spuy 2006). In South Africa, supplement existing wild populations with captive-bred fledglings of South African origin (J. M. Pittman in litt. 2007).

Anon. 2008. Unravelling the Wattled Crane mystery. BirdLife Africa Newsletter 11(1): 7-8.

Archibald, G. W.; Meine, C. D. 1996. Gruidae (Cranes). In: del Hoyo, J.; Elliott, A.; Sargatal, J. (ed.), Handbook of the birds of the world, pp. 60-89. Lynx Edicions, Barcelona, Spain.

Barnes, K. N. 2000. The Eskom Red Data Book of birds of South Africa, Lesotho and Swaziland. BirdLife South Africa, Johannesburg.

Beilfuss, R. D.; Brown, C. 2010. Assessing environmental flow requirements and tradeoffs for the Lower Zambezi River and Delta, Mozambique. Intl. J. River Basin Management 8(2): 127-138.

Beilfuss, R.; Bento, C.; Hancock, P.; Kamweneshe, B.; McCann, K.; Morrison, K.; Rodwell, L. 2003. Water, wetlands, and Wattled Cranes: a regional monitoring and conservation program for Southern Africa. International Conference on Environmental Monitoring of Tropical and Subtropical Wetlands. Okavango Research Center, Maun, Botswana.

Beilfuss, R.; Dodman, T.; Urban, E. K. 2007. The status of cranes in Africa in 2005. Ostrich 78(2): 175-184.

Bento, C. M. 2003. The status and prospects of Wattled Crane Grus carunculatus in the Marromeu Complex of the Zambezi Delta. M.Sc. Thesis. University of Cape Town, South Africa.

Bento, C. M.; Beilfuss, R. D.; Hockey, P. A. R. 2007. Distribution, structure and simulation modelling of the Wattled Crane population in the Marromeu Complex of the Zambezi Delta, Mozambique. Ostrich 78(2): 185-193.

BirdLife Botswana Crane Working Group. 2004. Report on the pilot project to capture Wattled Cranes. Babbler: 51-55.

BirdLife Botswana. 2006. Key Wattled Crane area secured. BirdLife International Africa Partnership e-Bulletin: 4.

Burke, A. 1996. Wattled Crane Bugeranus carunculatus. In: Meine, C.D.; Archibald, G.W. (ed.), The cranes: status survey and conservation action plan, pp. 76-88. International Union for Conservation of Nature and Natural Resources, Gland, Switzerland.

Collar, N. J.; Butchart, S. H. M. 2013. Conservation breeding and avian diversity: chances and challenges. International Zoo Yearbook.

del Hoyo, J.; Elliott, A.; Sargatal, J. 1996. Handbook of the Birds of the World, vol. 3: Hoatzin to Auks. Lynx Edicions, Barcelona, Spain.

Gibson, D. C.; Craig, C. G.; McCann, K.; Hancock, P. 2002. Aerial survey of Wattled Cranes Bugeranus carunculatus in the Okavango Delta, Botswana. Babbler 40: 5-14.

Hancock, P. 2003. Wattled Cranes research and monitoring in the Okavango Delta - 2002. Babbler: 4-9.

Hancock, P. 2008. Wattled Crane. In: Hancock, P. (ed.), The status of globally and nationally threatened birds in Botswana, 2008., pp. 6-9. BirdLife Botswana.

Hancock, P.; Motsumi, A.; Borello, W.; Tyler, S.; Evans, S. W. 2003. Botswana Wattled Crane (Bugeranus carunculatus): action plan and report of the Stakeholder Workshop, 6-8 August 2003, Maun, Botswana. BirdLife Botswana & BirdLife South Africa, Gaborone.

Hockey, P. A. R.; Dean, W. R. J.; Ryan, P. G. 2005. Roberts birds of southern Africa. Trustees of the John Voelcker Bird Book Fund, Cape Town, South Africa.

Johnsgard, P. A. 1983. Cranes of the world. Croom Helm, London.

Jones, K. L.; Rodwell, L.; McCann, K. I.; Verdoorn, G.H.; Ashley, M.V. 2006. Genetic conservation of South African Wattled Cranes. Biological Conservation 127: 98-106.

Kamweneshe, B.; Beilfuss, R. 2002. Population and distribution of Wattled Cranes and other large waterbirds on the Kafue Flats, Zambia.

Mattison, H. 2004. Wattled crane (Bugeranus carunculatus).

McCann, K. I.; Benn, G. A. 2006. Land use patterns within Wattled Crane (Bugeranus carunculatus) ranges in an agricultural landscape in KwaZulu-Natal, South Africa. Ostrich 77(3&4): 186-194.

Mitchell, A. D.; Wells, L. J.; Haugaard, J. 1998. Malawi 1997. Unpublished report.

Morrison, K.; van der Spuy, S. 2006. Joint efforts for Wattled Crane conservation in Africa. WAZA Magazine: 8-11.

Morrison, K.L. and Bothma, J.D. 1998. Wetland nesting sites of wattled and grey crowned cranes on the Steenkampsberg Plateau, South Africa. South African Journal of Wildlife Research 28(4): 110-120.

Motsumi, S.; Hancock, P. 2004. Aerial survey of Wattled Cranes in the Okavango Delta, Botswana, August 2003. Babbler: 44-51.

Motsumi, S.; Hancock, P. 2004. Estimating the breeding success of Wattled Cranes in the Okavango Delta using the proportion of juveniles to adults. Ecological Journal: 33-35.

Motsumi, S.; Senyatso, K. J.; Hancock, P. 2007. Wattled Crane (Grus carunculatus) research and monitoring in the Okavango Delta, Botswana. Ostrich 78(2): 213-219.

Nkape, K. 2004. Wattled Crane nest monitoring exercise. Babbler 44: 56-57.

Parker, V. 2005. Endangered Wildlife Trust and Avian Demography Unit, Johannesburg, South Africa.

Pittman, J. M. 2007. Update on the Wattled Crane recovery program, South Africa. Re-introduction News: 17-19.

Pittman, J. M. 2008. ICF provides important training for the South African Wattled Crane recovery programme. ICF Bugle 34(4): 4.

Further web sources of information
Explore HBW Alive for further information on this species

International Crane Foundation Species Field Guide

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Status Survey and Conservation Action Plan

Status, Survey and Conservation Action Plan

Text account compilers
Ekstrom, J., Evans, M., Malpas, L., Pilgrim, J., Shutes, S., Symes, A., Taylor, J.

Dean, R., Dodman, T., Dowsett-Lemaire, F., Dyer, M., Haugaard, J., Herremans, M., Leonard, P., Morrison, K., Msiska, H., Mundy, P., Pittman, J., Robertson, P., Shimelis, A., Simmons, R., Syvertsen, P., Tarboton, W., Tyler, S., Beilfuss, R.

Recommended citation
BirdLife International (2016) Species factsheet: Bugeranus carunculatus. Downloaded from on 26/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 26/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

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Additional resources for this species

ARKive species - Wattled crane (Bugeranus carunculatus) 0

Key facts
Current IUCN Red List category Vulnerable
Family Gruidae (Cranes)
Species name author (Gmelin, 1789)
Population size 4000-5300 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 2,300,000 km2
Country endemic? No
Links to further information
- Additional Information on this species
- Projected distributions under climate change