These birds were photographed at varous zoos I have visited. I will not photograph birds confined in small cages. Many zoos today have created large aviaries filled with trees and plants native to the resident birds. Some even simulate the native climatic conditions. Birds living in these environments seem quite happy and make excellent subjects on which to test new equipment and techniques. Unfortunately, I often fail to take good notes on the birds I am photographing. That is why the species of most are "unknown." Any help on identifying these birds would be appreciated.