1991 Psittacine captive breeding survey : a survey of private aviculture in the United States 1992 Johnson, Kurt A. |
Parrots : an action plan for their conservation 1993-1998 1993 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 1987 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 2002 Clemmons, Janine R. |
Status, management and conservation of the African grey parrot Psittacus erithacus in Nigeria 2001 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 2000 Dowsett, R. J. |