Megapodio delle Sula

Identificazione

The Sula scrubfowl is a medium-sized ground-dwelling bird growing to a length of between 30 and 35 cm (12 and 14 in). The sexes are similar in appearance, being a uniform reddish-brown colour and having a short, pointed crest and long red or orange-red legs and feet.

Tassonomia

Nome scientifico

Megapodius bernsteinii

Autorità

Schlegel, 1866

Ordine

Galliformi

Famiglia

Megapodiidae

Genere

Megapodius

Areale e habitat

It is known only from the Banggai and Sula Islands, groups of islands between Sulawesi and the Maluku Islands in Indonesia. Habitats include lowland forests as well as dense scrub near forests and farmland, at altitudes of up to 450 m (1,500 ft).

Migrazione

Resident species

Comportamento

The species usually forages in pairs, but on one occasion, a group of five birds moving about and feeding together was recorded, perhaps an adult pair and their young. The diet mainly consists of roots and invertebrates, including earthworms.<p>Very little was known of the breeding habits of this bird so a study was undertaken in 1991. Nine birds were in the vicinity of the study site, four pairs and a single bird. There was much vocalisation mostly in the form of duetting and choruses, with all the birds joining in synchrony. Calling took place in the mornings and to a lesser extent in the afternoons indicating the presence of birds close to the nest. The study nest was a cone-shaped mound in a fallow cultivated field close to scrub and forest remnants. It was built over two rotting logs and was constructed of sand and clay. Eggs are laid by the female in the mound and covered with soil (this was not observed). During the month-long observation period, a bird (or sometimes two) would approach the mound on most days and rake the surface with its claws. The bird faced downhill and scratched the surface with alternate feet, working in one instance for 116 minutes. Another bird could sometimes be heard in the nearby undergrowth. The scratching bird was alert to danger, freezing at unexpected noises, and peering round and responding to the warning cries of the blue-backed parrot (Tanygnathus sumatranus) and the spangled drongo (Dicrurus bracteatus). Monitor lizards (Varanus) sometimes tried to raid the nest, usually after an adult bird had been raking, but had little success while the researchers were watching.

Conservazione

Tendenza della popolazione

declining