Uncooked Cornish hens can be kept in the refrigerator for 1 to 2 days, same as raw chicken and other poultry. When you bring them home from the grocery store or butcher, it's best to plan to cook them within this timeframe to ensure freshness and safety. If you find that you won't be able to cook the hens within 1 to 2 days, I recommend you freeze them to extend their shelf life. Frozen Cornish hens can last for up to 6 months in the freezer if properly stored in airtight packaging. This helps maintain their quality and prevents freezer burn. Before cooking, thaw them safely in the fridge for 24 to 48 hours, depending on their size.