| Pain said three aviaries large enough to hold 20 birds of each of the three species are currently being built at the facility. |
| Birds awoke within 3 min and were placed into small recovery cages before being released into their housing aviaries. |
| In the current experiments females were in cages or aviaries with males with whom they had not previously bred. |
| The birds, whose wings are clipped to prevent them flying away, have been moved to aviaries in one of the royal palace's towers. |
| The night before each trial, birds were captured from aviaries and weighed. |
| At the end of the breeding season phase, we removed birds from their home aviaries and conducted a mating competency tournament. |
