the second crouched submissively to resolve a fight between them. This is the only recorded case of homosexual behaviour in sparrows. Nests are usually built a few metres apart in loose colonies of at most about 10 pairs, although sometimes pairs nest alone. The nest may be built in a range of habitats, and usually is built as a cup in a hole or crevice in a cliff or a wall. They may use suitable human-built structures, such as house eaves and streetlights. The nest is an open structure made of grass, lined with feathers and hairs, packed densely for compactness. Some ornithologists have reported this bird building domed nests in acacia trees, but these records may reflect confusion with the Spanish sparrow. The average clutch contains three to five eggs. Both sexes incubate the eggs and bring food to their young, but females do more. Eggs are incubated for short spells, around 10 minutes, and males incubate for shorter periods and less often. Though the male accompanies the female when she finds food and brings it to their nestlings, he less often brings any himself; once the young fledge and leave the nest the male is more active feeding them. References Works cited External links Media related to the Iago Sparrow at the Internet Bird Collection Passer Birds described in 1837 Endemic birds of Cape Verde Taxa named by John Gould Fauna of Santo Antão, Cape Verde Fauna of São Vicente, Cape Verde Fauna of São Nicolau, Cape Verde Fauna of Sal, Cape Verde Fauna of Boa Vista, Cape Verde Fauna of Maio, Cape Verde Fauna of Santiago, Cape Verde Fauna of Brava, Cape Verde