Red-billed quelea collected from under large roosts in Nigeria and used as a fertiliser. Tourists like to watch the large flocks of queleas, such as during visits of the Kruger National Park. The birds themselves eat pest insects such as migratory locusts, and the moth species "Helicoverpa armigera" and "Spodoptera exempta". The animal's large distribution and population resulted in a conservation status listed as least concern on the IUCN Red List. The red-billed quelea is sometimes kept and bred in captivity by hobbyists. It thrives if kept in large and high cages, with space to fly to minimise the risk of obesity.
What is a Masterpiece? confluence of memories and emotions forming a single idea", that it has "a power of recreating traditional forms so that they become expressive of an artist's own epoch and yet keep a relationship to the past". The highest masterpieces are said to be "illustrations of great themes." Clark also implicitly excluded the erotic from considerations of what constituted a masterpiece, based on his perspective that a necessary condition is the balance between sense and form (works that are too sensual are, therefore, unbalanced and not to be categorised at masterpiece level). What is a Masterpiece? What is a Masterpiece? is