Migratory birds play a vital role in maintaining ecological balance, health, and biodiversity. However, their existence and survival are increasingly threatened by habitat loss and human interference in wetlands worldwide. This review explores the complex dynamics of migratory birds, aquatic bird communities, and human influence in three globally significant wetlands: the Pantanal wetland in South America, Okavango Delta wetland in Africa, and Sundarbans wetland in Bangladesh and India. By comparing the ecological characteristics, avian diversity, and conservation challenges across these wetlands, we highlight the importance of understanding the coexistence of migratory and resident bird species in the face of anthropogenic pressure and changing landscapes. Human activities such as deforestation, agricultural expansion, and tourism development have reshaped these wetlands, affecting hydrological patterns, habitat heterogeneity, and resource availability for birds. Migratory and resident species have adapted to these changes through niche partitioning strategies, including spatial, temporal, and behavioral adaptations facilitated by the dynamic nature of these wetlands. However, the delicate balance of coexistence is threatened by ongoing habitat degradation and climate change. To navigate the coexistence and ensure the long-term conservation of these wetlands and their avian diversity, we propose adaptive management approaches that integrate ecological goals with sustainable human activities. These strategies include fire management, water flow regulation, mangrove restoration, and community-based conservation initiatives. By engaging local communities, promoting cross-border collaboration, and prioritizing research on avian population dynamics and habitat responses, we can work towards preserving these invaluable wetland ecosystems as sanctuaries for migratory and resident birds. Future research should focus on long-term bird population monitoring, habitat responses, and economic analyses of conservation benefits to strengthen strategies.