Malagasy harrier

Description

It is about 42 – long; the female is up to 13% larger than the male. The male has a blackish back and a greyer head with dark streaks. The underparts and rump are whitish and the tail is grey with dark bars. The forewings and wingtips are blackish while the secondaries are grey with dark bars. Females are browner than the males.

The Réunion harrier is smaller and darker with shorter legs and shorter, more rounded wings. Males have a blacker head and plainer secondaries and tail.

Distribution and habitat

In Madagascar it is found in marshland and grassland across the island except for the south. It is generally scarce with the largest numbers in the north-west. It occurs from sea-level up to 1800 m. On the Comoros it is more often found in drier habitats and in forested areas. It has occurred on all four main islands but there are no recent records from Mayotte.

Its population size is uncertain but is estimated to be between 250 and 999 individuals. It is thought to be declining as a result of hunting and habitat destruction and is classed as endangered by BirdLife International.

Behaviour

It feeds mainly on birds such as the Madagascar partridge and also takes reptiles, amphibians, rodents and insects. It typically feeds by flying low over the ground and dropping down rapidly when it spots its prey. It will also hunt over the canopy of forests.

It breeds in marshland, building a nest of grass and stems on the ground or low in a bush. The white eggs are incubated for about 32–34 days and the young birds fledge after 42–45 days.

References

• Clarke, Roger (1995) The Marsh Harrier, Hamlyn, London.
• Ferguson-Lees, James & Christie, David A. (2001) Raptors of the World, Christopher Helm, London.
• Global Raptor Information Network (2008) Species account: Madagascar Marsh Harrier Circus macrosceles . Downloaded from http://www.globalraptors.org on 4 August 2008.
• Sinclair, Ian & Langrand, Olivier (1998) Birds of the Indian Ocean Islands, Struik, Cape Town.

References

1. BirdLife International. (2016). "''Circus macrosceles''".