"The western capercaillie (Tetrao urogallus), also known as the wood grouse, heather cock, or just capercaillie /ˌkæpərˈkeɪli/, is a Eurasian member of the grouse family and ...
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its largest member. The largest known specimen, recorded in captivity, had a weight of 7.2 kg (16 lb). Found across Europe and Asia, this ground-living forest bird is renowned for its mating display. The species shows extreme sexual dimorphism, with the male twice the size of the female. The worldwide population is in the category "least concern" of the IUCN, although the populations of Central Europe are declining and endangered, or already extinct." - (en.wikipedia.org 01.03.2020)
