Authors: Pithon, JA Dytham, C

Citation: Ja. Pithon et C. Dytham, Breeding performance of Ring-necked Parakeets Psittacula krameri in small introduced populations in southeast England, BIRD STUDY, 46, 1999, pp. 342-347

Authors: Pithon, JA Dytham, C

Citation: Ja. Pithon et C. Dytham, Census of the British Ring-necked Parakeet Psittacula krameri population by simultaneous counts of roosts, BIRD STUDY, 46, 1999, pp. 112-115