Chauna chavaria, a species of the small family of birds Anhimidae, found in the northern regions of Colombia and Venezuela.

Gavia arctica, a medium-sized member of the loon or diver family that breeds in Eurasia, with grey head, black throat, white underparts and chequered black-and-white mantle.

(Australia, informal, idiomatic) In an extremely isolated place, remote from populated areas; in the middle of nowhere. Typically used to refer to outback areas.

A monochrome system of transmitting and receiving television signals. / A television set that displays only monochrome images.

An African leguminous plant, of the species Vigna unguiculata, widely cultivated as food and forage, specifically Vigna unguiculata subsp. unguiculata. / The edible seed of these plants.

An informal sport in which participants use tyre inner tubes as rafts and ride them on rivers through caves

(astronomy) Any black hole with a mass from 10⁵ to 10¹⁰ times that of the Sun.

The black rat.

plural of Asian black rat

A medium-sized wallaby, Macropus dorsalis, from Queensland and New South Wales