Millerbird

The millerbird (Acrocephalus familiaris) is a species of Old World warbler in the family Acrocephalidae. It has two subspecies, A. f. kingi and A f. familiaris. The latter, the Laysan millerbird, became extinct sometime between 1916 and 1923. The former, the critically endangered Nihoa millerbird, remains the only race left, inhabiting the small island Nihoa in Hawaiʻi, though it has since been reintroduced to Laysan. It is the only Old World warbler to have colonised Hawaiʻi, although there is no fossil evidence that the species ever had a distribution beyond these two islands.

Millerbird
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Acrocephalidae
Genus: Acrocephalus
Species:
A. familiaris
Binomial name
Acrocephalus familiaris
(Rothschild, 1892)
Subspecies

Acrocephalus familiaris familiaris †
Acrocephalus familiaris kingi

Millerbirds form long-term pair bonds and defend territories over a number of years. Territories can be as large as 0.95 hectares (2.3 acres), although 0.19–0.40 hectares (0.47–0.99 acres) is more typical. Breeding occurs variably from January to September depending on food availability.

References
  1. BirdLife International (2012). "Acrocephalus familiaris". IUCN Red List of Threatened Species. 2012. Retrieved 26 November 2013.CS1 maint: ref=harv (link)
  • Morin, Marie P., Sheila Conant and Patrick Conant. (1997). Laysan and Nihoa Millerbird (Acrocephalus familiaris), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online:


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