Daily sketch - Przewalski horse

Salve,
 beautiful Spring has arrived finally - and I am thinking about the big open grasslands of Eurasia, where wild horses have been domesticated by our ancestors, perhaps more than 6000 years ago.  The ancestor of the domesticated horse or tarpan has been extinct since XIX century, but its cousin, the Przewalski horse, is still surviving. I sketched this Przewalski horse head for now.  But I am going to give a try at drawing a tarpan, especially since I have this excellent (but outdated in many parts) book by David P. Willoughby titled ''The Empire of Eqqus,'' where the author drew some fine diagrams of the wild equids that are quite helpful in understanding the anatomy differences etc.
Polski konik aka Polish konik was used to recreated the extinct tarpan (Tadeusz Vetulani et al) and in Poland there is this wild horse preserve at Popielno, where wild koniki roam. From Popielno the offsprings of polskie koniki gave raise to various wild horse herds throughout European nature preserves.

Interesting article on the ecology of the wild horse and aurochs modern substitutes