Details

Autor(en) / Beteiligte

• Porkert, J
• Solheim, R
• Flor, A

Titel

Behaviour of hybrid male Tetrao tetrix [male] x T. urogallus [female] on black grouse leks

Ist Teil von

• Wildlife biology, 1997-12, Vol.3 (3-4), p.169-176

Erscheinungsjahr

1997

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Crosses between male black grouse Tetrao tetrix and female capercaillie T. urogallus are the most common grouse hybrids. Some male hybrids (F sub(1)-generation) may be fertile and produce offspring (F sub(2)-generation) with females of capercaillie and, rarely, black grouse. Specimens and descriptions of lek behaviour are also available for probable F sub(3)- and F sub(>3)-hybrids. Three and two male F sub(1) hybrids were documented to display simultaneously on a black grouse lek in Norway (1993-1997), and solitarily displaying hybrids were documented on black grouse leks in the Czech Republic (1960-64), Sweden (1991-93) and Norway (1992). Mating of hybrid males with female capercaillie was observed in 1992 and 1994. The lekking behaviour of the hybrids and their attitudes towards other tetraonids are described.