I second that, I grew some lettuce seedlings for the birds, and put the seedling tray in the aviary, they spent ages rummaging around in the soil.finchbreeder wrote:When they have chicks the parents like weeds, roots and all so they can pick through the dirt on the roots for minute bugs.
To make the water areas safe, I put rocks in the normal drinking water so that it just left little puddles of water, just in case one of the babies tried swimming.
I also used a couple of lids off jars just for the young ones drinking water.