Barbary lion In the early 20th century, when Barbary lions were not common anymore, they were sighted in pairs or in small family groups comprising a male and female lion with one or two cubs. Between 1839 and 1942, sightings of wild lions involved solitary animals, pairs and family units. Analysis of these sightings indicate that lions retained living in prides even when under increasing persecution, particularly in the eastern Maghreb. The size of prides was likely similar to prides living in sub-Saharan habitats, whereas the density of the Barbary lion population is considered to have been lower than in moister habitats.
Apex predator tethered cormorants have been used to catch fish. Ecotourism sometimes relies on apex predators to attract business. Tour operators may in consequence decide to intervene in ecosystems, for example by providing food to attract predators to areas that can conveniently be visited. This in turn can have effects on predator population and therefore on the wider ecosystem. As a result, provisioning of species such as the tiger shark is controversial, but its effects are not well established by empirical evidence. Other affected apex predators include big cats and crocodiles. In some densely populated areas like the British Isles, all the