Traditional and, most importantly, practical group pastures for colts are very popular. The colts are set free at once and the first hour or so is the most entertaining part, as the youngsters sort out the pack leadership issues before settling to eat. Groups are open to horses of all breeds, but as the standardbred trotter and finnhorse are the two most popular horse breeds in Finland, they also form a majority in these groups. :)
Video by jenna1penna on Youtube.