When it comes to glass, the National Aviary on Pittsburgh’s North Side has a unique problem. Not only do officials there not want any of their more than 500 birds to fly into its windows and glass ...

A blue-crowned hanging parrot from Asia rests in the R.J. Reynolds Forest Aviary at the N..C. Zoo. The aviary remains closed to guard against a highly contagious avian influenza. N.C. Zoological Park ...