雅思听力

🎧 Listening Transcript

Good morning, everyone. Today we're going to continue our discussion on environmental science, focusing on the impact of urban development on local ecosystems. A recent study conducted in the city of Melbourne examined how the expansion of residential areas has affected the population of native birds. The researchers found that while some species, such as the magpie, have adapted well to urban environments, others, particularly those that rely on dense forest habitats, have declined significantly. Interestingly, the study also revealed that the presence of small green spaces, like community gardens, can partially mitigate these negative effects. However, the overall trend remains concerning, with a 20% reduction in native bird diversity over the past decade. The researchers suggest that city planners should prioritize preserving existing green corridors to support wildlife.