Much depends what your local area is like. If there is plenty of undergrowth with tall trees for roosting, they might stay around. Even then, they will probably stray. Silvers are the most likely to stick around. Goldens and Amherst’s will hybridise if they have access to each other. Silver Pheasant cocks at liberty will often become aggressive to people. Best kept in aviaries!I have golden pheasants, silver pheasants and lady Amherst pheasants. They have undergone 2 months of quarantine period. I want to know the pros and cons about keeping them in to decide whether to release them to be free range or to be in the enclosures.