1991 Psittacine captive breeding survey : a survey of private aviculture in the United States Author(s) Johnson, Kurt A.
Parrots : an action plan for their conservation 1993-1998 Author(s) Lambert, Frank Wirth, Roland Seal, Ulysses S. Thomson, Jorgen B. Ellis-Joseph, Sue
An investigation of parrots and their trade on Pulau Bacan (North Molluccas) and Pulau Warmar, Aru Islands Author(s) Milton, G. Randy Marhadi, Agus
Status survey of the African grey parrot [Psittacus erithacus timneh] and development of a management program in Guinea and Guinea-Bissau Author(s) Clemmons, Janine R.
Status, management and conservation of the African grey parrot Psittacus erithacus in Nigeria Author(s) McGowan, Philip J. K.
Le statut des perroquets vasa et noir Coracopsis vasa et C. nigra et de l'Inséparable à tête grise Agopornis canus à Madagascar Author(s) Dowsett, R. J.
