Artificial nest boxes are provided and placed in areas where the keepers have access to. There are only a few trees with large enough cavities in the aviary so the birds nest in the boxes.There is a path below the bridges which is accessible to staff only, they can comb the ground area for dead birds, but its still not easy being a large, steep and thickly vegetated area.
Additionally, a large indoor cage is located at one end of aviary, with food placed there in the mornings and evenings. I believe most of the sick or weak birds prefer to stay around that area for convenient access to food. Any lethargic bird spotted will be removed and kept under observation.
