Peachicks need to be kept in a brooder until they feather out or until the brooder temperature meets the outdoor temperature. Each week that a peachick is in the brooder you should lower the brooder temperature by 5 degrees. This will ease the peachick into lower temperatures with the least amount of stress possible.
Bergenia (Bergenia cordifolia) is another perennial you can plant under pine trees. This deer and rabbit resistant plant grows in USDA zones 2 through 9 in all soil pH levels, including acidic. It tolerates drought conditions, dense shade and dry soils. Pink lily-of-valley (Convallaria majalis var.
Selective pruning to reduce canopy density may also be considered. Other good options for planting under trees (especially those with dense canopies) are spring flowering bulbs and / or spring ephemeral plants. Both of these groups of plants grow and flower before trees fully leaf out in the spring.