Behaviour
Aldabra brush warbler singing © Robert Prys-Jones
Biology
Size
- Weight: 18.0 – 19.4 g (n = 4)
- Wing length: 63 – 70 mm (n = 5)
- Tail length: 85 – 91 mm (n = 3)
- Beak length (tip to skull): 17.9 – 20.2 mm (n = 5)
- Male slightly larger than female
Growth
Unstudied. No nest containing young ever found.
Reproduction
Limited evidence suggests breeding coincided with onset of wet season (October/November) and lasted until January/February. Moult recorded from late January into April.
Life Expectancy
No precise information. Maximum life span at least nine years, as one individual ringed in 1974 was seen until 1983.
Behaviour
Spent most of time skulking silently in dense vegetation, making individuals extremely difficult to locate without use of tape playback.
Pairs shared a territory at least during the breeding season, when they would communicate with occasional soft “chak” calls. Only easily seen when a male delivered its staccato song from a prominent perch.
Migration
Sedentary.
Associations
Apparent pre-disposition to set up territory in areas with abundant screw pine Pandanus cf. tectorius, in which the only active nest recorded was also situated.