The current study aimed to monitor three species of ardeids: Squacco Heron (Ardeola ralloides), Little Egret (Egretta garzetta), and Western Cattle Egret (Bubulcus ibis) at Lake Tonga (36°53′N, 08°31′E) through biweekly surveys over two years, from December 2021 to November 2023. During the breeding periods (April to August), weekly observations were conducted, which included the detailed measurements of nests, eggs, and nesting locations. The generalized linear models (GLM) and mixed data factor analysis (FAMD) were used to analyze the relationships between environmental factors and nesting characteristics. Population numbers for the three species fluctuated seasonally. In 2022, 108 nests were counted, while 104 in 2023. Little Egrets and Western Cattle Egrets typically laid 3 to 5 eggs per nest, whereas Squacco Herons 3 to 4 eggs. All species exhibited high hatching rates: 90.83% for Little Egrets, 97.09% for Cattle Egrets, and 89% for Squacco Herons in 2022. These rates remained similarly high in 2023, with 91.42% for Little Egrets, 93.24% for Cattle Egrets, and approximately 97% for Squacco Herons. Statistical analysis indicated that clutch size was the primary factor affecting reproductive success (p = 2.89e-10). The findings demonstrated that the focal species are highly sensitive to environmental characteristics, particularly vegetation height, water depth, and climate conditions. Nest distribution patterns were influenced by environmental factors such as temperature and humidity, affecting each species differently. Little Egrets and Western Cattle Egrets exhibited similar distribution patterns within the colony, while Squacco Herons tended to nest at higher elevations. This investigation highlights the impact of ecological conditions on Ardeidae reproduction and distribution at Lake Tonga.