Description: English: African olive pigeons at a clay lick in Lynnwood Glen, in suburban Pretoria, South Africa. Up to 10 birds congregate at a time, with both sexes and various age groups present. The habit may well be related to consumption of poisonous Melia azedarach or Solanum seeds. Reference: Downs, C.T., 2006. Geophagy in the African olive pigeon Columba arquatrix. Ostrich-Journal of African Ornithology, 77(1-2), pp.40-44. Date: 2 March 2013, 08:36. Source: Own work. Author:
JMK.