Kurjet

Gruidae sunt familia magnarum avium cruribus collisque longis praeditis ordinis Gruiformium. Quindecim species in quattuor genera digeruntur. Ardeidis dissimiles, Gruidae collis porrectis volant. In omnibus orbis terrarum continentibus praeter Antarcticam et Americam Australem habitant.

Bibliographia

• Hayes, M. A. 2005. Divorce and extra-pair paternity as alternative mating strategies in monogamous sandhill cranes. Thesis magistralis, University of South Dakota, Vermilion, S.D. International Crane Foundation's Library.
• Wessling, B. 2003. Acoustic individual monitoring over several years (mainly Common Crane and Whooping Crane). Craneworld.de.