Feeding behaviour of Greater Flamingo (Phoenicopterus roseus) in Chelekleka wetland, Ethiopia

An understanding of the behavior and habitat preferences of Greater Flamingos is crucial for the conservation of this species. The population of these birds is intricately connected to variations in the limnic habitat and the availability of potential food sources. The purpose of this thesis was therefor to investigate the feeding behavior and dietary preferences of greater flamingos within the context of Lake Chelekleka, Ethiopia. Furthermore, it aimed to understand the impact of environmental factors such as physiochemical parameters and nutrient availability within the lake. Daily observations of the flamingos were carried out, supplemented by the collection of water samples and phytoplankton. Additionally, I investigated the macroinvertebrate community. This community serves as an indicator of Lake Chelekleka's water quality and is a significant food source for the flamingos. Our observations reveal that throughout the day, flamingos in Chelekleka are predominantly engaged in feeding, with a majority of individuals displaying feeding behavior in the afternoon. Their feeding behavior mainly involves feeding while walking and actively moving their bills from side to side into the substrate and lower water masses. This feeding strategy, coupled with the diverse range of macroinvertebrates in Chelekleka, suggests that this is their primary food source in this wetland. Flamingos in Chelekleka also exhibit a clear preference for synchronized feeding with other individuals, a key aspect of their feeding strategy. Despite the significant anthropogenic threats that affect Chelekleka, the water conditions and overall state assessed in the lake still appear favorable for the flamingos. However, addressing these threats is crucial for the conservation of the greater flamingos and the preservation of their ecosystem.