The global climate during the Triassic was mostly hot and dry, with deserts spanning much of Pangaea’s interior. However, the climate shifted and became more humid as Pangaea began to drift apart.
Kaus Borealis, the Northern (part of the) Bow, was Al Tizini’s Rai al Na’aim, the Keeper of the Na’ams, the uncertainty as to the meaning of which has already been noticed; but Kazwini evidently understood by it Ostriches, for in his list it is, with the stars μ, Al Thalimain, plainly meaning these desert birds.