In today's lecture, we'll discuss the impact of urbanization on local ecosystems. One key point is that cities often create 'heat islands' due to concrete and asphalt absorbing sunlight. However, a lesser-known effect is on bird migration patterns. A study in Chicago found that artificial lights at night disorient migratory birds, causing them to circle buildings for hours. This delays their journey and increases energy expenditure. Interestingly, the study also noted that birds are more attracted to red lights than blue ones, which suggests that changing street lighting could reduce these disruptions. So, while we often focus on temperature changes, light pollution is equally significant.
❓ According to the lecture, what did the study in Chicago reveal about artificial lights and migratory birds?
A. A. Birds are equally attracted to all colors of artificial light.
B. B. Red lights cause more disorientation in birds than blue lights.
C. C. Blue lights delay bird migration more than red lights.
D. D. Artificial lights help birds navigate during their migration.
✅ 正确答案
B. Red lights cause more disorientation in birds than blue lights.