The red-cheeked cordon-bleu or red-cheeked cordonbleu (Uraeginthus bengalus) is a small passerine bird in the family Estrildidae. This estrildid finch is a resident breeding bird in drier regions of tropical Sub-Saharan Africa. Red-cheeked cordon-bleu has an estimated global extent of occurrence of 7,700,000 km2.
In 1760 the French zoologist Mathurin Jacques Brisson included a description of the red-cheeked cordon-bleu in his Ornithologie based on a specimen that he mistakenly believed had been collected in Bengal. He used the French name Le Bengali and the Latin Bengalus. Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. When in 1766 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the twelfth edition, he added 240 species that had been previously described by Brisson. One of these was the red-cheeked cordon-bleu. Linnaeus included a brief description, coined the binomial name Fringilla bengalus and cited Brisson's work. The specific name bengalus is based on the erroneous belief that the species came from Bengal. The type location was subsequently designated as Senegal. The species is now placed in the genus Uraeginthus that was introduced by the German ornithologist Jean Cabanis in 1851.
Like other members of its genus, the red-cheeked cordon-bleu is a very small finch, measuring only 12.5–13 cm (4.9–5.1 in) in length. It weighs 9.9 g (0.35 oz) on average, with known extremes in wild populations ranging from 8.9–11 g (0.31–0.39 oz). The adult male has uniformly brown upperparts, pale blue breast, flanks and tail and a yellow belly. There is a red patch on each cheek, but this can rarely appear orange or even yellow. Females are similar but duller, and lack the cheek spot. Immature birds are like the female, but with blue restricted to the face and throat.
The red-cheeked cordon-bleu is common and widespread across much of central and eastern Africa. Its range stretches from the West African countries of Senegal, Gambia and southwestern Mauritania east through southern Mali, southern Niger, southern Chad and southern Sudan to Ethiopia and northwestern and southwestern Somalia, and then south to southern Democratic Republic of the Congo, eastern Angola, northern and western Zambia, southern Tanzania and northern Mozambique. It has also been introduced to the Hawaiian Islands of Hawaii and Oahu. It has been found one time (in 1924) on Cape Verde and was recorded in the Maadi area in northern Egypt during the mid-1960s; the latter birds may have been escaped cage birds, as there have been no records since. It has been photographed in the Los Angeles Area (5/19/20) as well.
It is found in all habitats except forest interiors, at elevations ranging from sea level to 2,430 m (7,970 ft).