Brinsea Mini Advance Incubator Small Egg Tray The Mini Advance Small Egg Insert / Tray increases egg capacity from 7 to 12 SMALL eggs, such as quails, lovebirds, etc. up to the size of pheasant eggs (won't work for larger eggs - for which one needs the 7-egg tray) The Mini Advance Small Egg Tray is easy to install and ensures your eggs are turned safely and efficiently. This is an optional accessory for the Mini Advance or Mini Eco.