Breeding ecology and inter-specific relationships between collared dove, laughing dove and turtle dove in various habitats in Ouargla region (Northeast of Algerian Sahara). This study was carried out for two successive years 2016 -2017 and according to plant diversity and remoteness or proximity of these habitats to urbanization. The breeding season of the three species was significantly different, where the collared dove starts to lay eggs earlier than theses laughing dove and Turtle dove. Moreover, there was no statistically significant difference in the density of breeding pairs between the three species. Their nests distribution was significantly different between study sites depending on plant diversity and according to remoteness or proximity to urbanization of the study areas. Furthermore, we have found the three doves prefer to nest in diversified agricultural areas. With regard to their nests placement we found that, the three doves were having nested on eight kinds of different tree species; there was significant difference between the preferences of the three species on the level of each support’s kind of their nests. The majority of examined nests of Streptopelia decaocto and Streptopelia turtur were oriented to the East. While the nests of Streptopelia senegalensis were exposed to the South. Most of the studied nests were built between 2.01 and 4.00 meters above the ground.

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