The economic situation improved with the arrival of cattle in the colony. It is unknown when the first cattle arrived, but the division of land for the grazing of cattle in 1627 represented one of the first moves towards private land ownership in the colony. Cattle became an important source of wealth in the colony; the average cow could sell for £28 in 1638 (£ in 2010, or $ at parity). However, the flood of immigrants during the Great Migration drove down the price of cattle. The same cows sold at £28 in 1638 were valued in 1640 at only £5 (£ in 2010, or $ at parity). Besides cattle, there were also pigs, sheep, and goats raised in the colony.