Gruychev, Gradimir V. “New Breeding Localities of Stock Pigeon (Columba Oenas Linnaeus, 1758) in Bulgaria: Do Game Feeding Grounds Contribute to Increasing Distribution of the Species?”. Global Journal of Agricultural Innovation, Research & Development 10 (December 22, 2023): 102–107. Accessed July 3, 2024. https://avantipublisher.com/index.php/gjaird/article/view/1445.