A lyrebird is either of two species of ground-dwelling Australian birds that compose the genus Menura, and the family Menuridae. They are most notable for their impressive ability to mimic natural and artificial sounds from their environment, and the striking beauty of the male bird's huge tail when it is fanned out in courtship display. Lyrebirds have unique plumes of neutral-coloured tailfeathers and are among Australia's best-known native birds. The lyrebirds are large passerine birds, amongst the largest in the order. They are ground living birds with strong legs and feet and short rounded wings. They are generally poor fliers and rarely take to the air except for periods of downhill gliding. The superb lyrebird is the larger of the two species. Females are 74–84 centimetres (29–33 in) long, and the males are a larger 80–98 centimetres (31–39 in) long—making them the third-largest passerine bird after the thick-billed raven and the common raven. Albert's lyrebird is slightly smaller at a maximum of 90 centimetres (35 in) (male) and 84 centimetres (33 in) (female). They have smaller, less spectacular lyrate feathers than the superb lyrebird, but are otherwise similar. Superb Lyrebirds weigh around 0.97 kilograms (2 lb 2 oz), while Albert's Lyrebird weigh slightly lighter, at 0.93 kilograms (2 lb 1 oz). (Source: Wikipedia.org, CC BY-SA)