The common ostrich is the largest and heaviest living bird, a flightless ratite of Africa's open savannas and semi-deserts whose physiology pushes the limits of what a bird's body can do. It is the fastest animal on two legs and lays the largest egg of any living species. Although the global population is large enough that the species is not formally at risk, wild numbers have contracted sharply over the past two centuries, and several regional populations are declining today [BirdLife International 2018; IFAW 2023]. This profile examines the ostrich's distinctive biology, the pressures reshaping its range, and the cross-border programs working to restore depleted populations.
Biology and Identification
The common ostrich is unmistakable: a long bare neck and legs, a rounded body carried on two-toed feet, and plumage that differs strikingly between the sexes. Males stand roughly 2.1–2.75 m tall and weigh about 100–130 kg, with black body feathers offset by white primaries and tail; females are smaller — about 1.75–1.9 m and 90–120 kg — and uniformly greyish-brown [Common ostrich, Wikipedia]. This makes the ostrich the tallest and heaviest bird alive [Hutchinson et al. 2015].
The species is built for running. Ostriches sustain speeds near 55 km/h and reach short bursts of about 70 km/h, the fastest of any bipedal animal [Common ostrich, Wikipedia]. Their two-toed foot — unique among birds — and elongated, muscular hindlimbs act as efficient springs; biomechanical modeling of the pelvic limb shows that limb posture at mid-stance keeps extensor muscles near their maximal moment-generating capacity, optimizing economical locomotion [Hutchinson et al. 2015].
Ostriches are exceptionally well adapted to heat. They tolerate prolonged panting — observed for hours — without the respiratory alkalosis that quickly affects most other birds, modulating airflow so that evaporative cooling is not coupled to disruptive shifts in blood chemistry [Schmidt-Nielsen et al. 1969]. They are omnivorous, feeding chiefly on seeds, grasses, shrubs, fruit and flowers, with insects such as locusts and occasional small reptiles [Common ostrich, Wikipedia]. The species also lays the largest egg of any living bird — about 15 cm long and roughly 1.4 kg [Common ostrich, Wikipedia]. Four subspecies are recognized within Struthio camelus; the Arabian ostrich (S. c. syriacus) went extinct around 1966 [Common ostrich, Wikipedia].
Habitat and Range
The common ostrich is native to open habitats across Africa — savanna and Sahel both north and south of the equatorial forest belt — favoring semi-arid plains and open semi-desert where its long-distance vision and running speed are most useful [BirdLife International 2018; Common ostrich, Wikipedia]. Historically the species also occurred across parts of the Arabian Peninsula and the Near East, but that eastern range is gone, lost with the extinction of the Arabian subspecies in the twentieth century [Common ostrich, Wikipedia].
Within Africa the picture is uneven. Southern and East African populations remain comparatively robust, while the North African (red-necked) subspecies, S. c. camelus, has been heavily depleted and now survives in only a fraction of the countries where it once ranged, having disappeared from much of the Sahara and Sahel [Saharan Conservation 2023; FWS 2023]. The Tunisian population was extirpated by the late nineteenth century, with the last wild birds recorded in 1887 [Marwell Wildlife 2015].
In accordance with NRWL sensitive-species policy, specific site locations, corridor routes, and seasonal movement details are not disclosed in this article.
Conservation Status
The common ostrich is listed as Least Concern on the IUCN Red List, assessed by BirdLife International in 2018 [BirdLife International 2018]. The species qualifies for this category because of its very large range and large overall population; it does not approach the thresholds for a threatened classification. The assessment nonetheless records the global population trend as decreasing [BirdLife International 2018].
That global figure masks substantial regional variation. The North African subspecies S. c. camelus is severely depleted and has been reintroduced from captive stock in several Saharan countries [Saharan Conservation 2023]. The closely related Somali ostrich (Struthio molybdophanes), once treated as a subspecies of the common ostrich, has been recognized as a distinct species since 2014 and is considerably more imperiled, with its own separate IUCN assessment [Common ostrich, Wikipedia].
International trade is regulated under CITES. Most populations of Struthio camelus are not listed, but the populations of Algeria, Burkina Faso, Cameroon, the Central African Republic, Chad, Mali, Mauritania, Morocco, Niger, Nigeria, Senegal and Sudan — corresponding to the depleted North African subspecies — are included on CITES Appendix I, prohibiting commercial international trade in those birds [CITES 2023].
Threats
Hunting and overexploitation drove the most dramatic historical losses. Demand for feathers, eggs, skin and meat reduced wild numbers across the species' range over the past two centuries, and overhunting eliminated the ostrich from regions such as southern Tunisia by the end of the nineteenth century [Marwell Wildlife 2015; Common ostrich, Wikipedia].
Bushmeat hunting and egg collection continue to depress some East African populations, where birds and eggs are taken for food and local trade [IFAW 2023].
Habitat loss and competition. Conversion of open rangeland and competition with livestock for forage reduce the carrying capacity of remaining habitat, compounding pressure from direct exploitation [IFAW 2023].
Climate change is emerging as an added stressor, with shifts in food availability and temperature interfering with breeding rhythms across parts of the range [IFAW 2023]. Because ostrich reproductive success is tightly linked to heat tolerance, warming conditions can directly affect breeding output in the wild.
What Is Being Done
Reintroduction of the North African subspecies. A coordinated program has returned S. c. camelus to parts of its former Saharan range using captive-bred founders. In late 2014, birds were released into Dghoumès National Park in Tunisia — the species' first return there after a 127-year absence — with additional stock prepared at Sidi Toui National Park [Marwell Wildlife 2015]. The founder population was assembled from birds held at Souss-Massa National Park in Morocco and the National Wildlife Research Centre in Saudi Arabia, themselves originally sourced from Chad and Sudan [Marwell Wildlife 2015].
Sahel and Sahara recovery work. Conservation organizations operating across the Sahel maintain captive-breeding and release programs for the North African ostrich, treating it as a flagship for the restoration of degraded desert ecosystems alongside other Saharan fauna [Saharan Conservation 2023].
International trade controls. The CITES Appendix I listing for the North African populations restricts commercial international trade in the most depleted birds, complementing in-country protection [CITES 2023].
Research on physiology and breeding. Studies of ostrich thermoregulation and locomotor biomechanics inform captive husbandry and the management of release stock, helping reintroduction programs match founders to local climates [Schmidt-Nielsen et al. 1969; Hutchinson et al. 2015].
How Readers Can Help
Citizen science. Photograph and log wildlife observations through platforms such as iNaturalist. Verified occurrence records contribute directly to range-mapping efforts and conservation assessments.
Policy engagement. Contact elected representatives in support of measures that protect rangeland habitat, strengthen enforcement of wildlife-trade rules, and uphold CITES Appendix I commitments for the depleted North African populations [CITES 2023].
Informed consumer choices. Buy ostrich products — feathers, leather and meat — only from sources that can demonstrate they come from legal, regulated farming rather than wild birds, and avoid undocumented exotic-animal goods when traveling in range countries.
Education outreach. Share accurate, science-based information about the ostrich's ecological role and the difference between secure southern populations and the depleted North African subspecies, so that conservation attention reaches the birds that need it most [Saharan Conservation 2023].
References
[BirdLife International 2018] BirdLife International. (2018). Struthio camelus. The IUCN Red List of Threatened Species 2018: e.T45020636A132189458. https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T45020636A132189458.en
[CITES 2023] CITES. (2023). Appendices I, II and III — Struthio camelus. Convention on International Trade in Endangered Species of Wild Fauna and Flora. https://cites.org/eng/app/appendices.php
[Common ostrich, Wikipedia] Wikipedia contributors. Common ostrich (Struthio camelus). Wikipedia, The Free Encyclopedia (accessed June 2026). https://en.wikipedia.org/wiki/Common_ostrich
[FWS 2023] U.S. Fish & Wildlife Service. Ostrich (Struthio camelus camelus) — Species profile. https://www.fws.gov/species/ostrich-struthio-camelus-camelus
[Hutchinson et al. 2015] Hutchinson, J.R., Rankin, J.W., Rubenson, J., Rosenbluth, K.H., Siston, R.A. & Delp, S.L. (2015). Musculoskeletal modelling of an ostrich (Struthio camelus) pelvic limb: influence of limb orientation on muscular capacity during locomotion. PeerJ, 3, e1001. https://doi.org/10.7717/peerj.1001
[IFAW 2023] International Fund for Animal Welfare. (2023). Ostriches: Facts, Threats & Conservation. https://www.ifaw.org/international/animals/ostriches
[Marwell Wildlife 2015] Marwell Wildlife. (2015). The return of the long-lost North African ostrich to Tunisia. https://www.marwell.org.uk/zoo-news/the-return-of-the-long-lost-north-african-ostrich-to-tunisia/
[Saharan Conservation 2023] Sahara Conservation. (2023). North African ostrich recovery. https://saharaconservation.org/species-recovery/north-african-ostrich-recovery/
[Schmidt-Nielsen et al. 1969] Schmidt-Nielsen, K., Kanwisher, J., Lasiewski, R.C., Cohn, J.E. & Bretz, W.L. (1969). Temperature regulation and respiration in the ostrich. The Condor, 71(4), 341–352. https://doi.org/10.2307/1365733