What are the causes for Least Bell's vireo going exticant?

The Least Bell's Vireo has faced extinction primarily due to habitat loss and degradation, particularly from urban development, agriculture, and water management practices that have altered its riparian habitats. Additionally, the introduction of invasive species and predation by domestic cats and other non-native predators have further threatened its populations. Climate change also poses risks by altering the availability of suitable habitats and food sources. Conservation efforts are ongoing to protect and restore its natural habitat.