Photo shows a bar headed goose bathes in Lhasa’s Dragon lake park on Nov.12. During the summer season birds spawn in the northern region, and as the temperature drops, they flock towards the southern valley. The arrival of bar headed geese and black headed gulls into Lhasa has become the center of attention in city parks.[Photo/Xinhua]

Photo shows a bar headed goose shows off its wings in Lhasa’s Dragon Lake Park on Nov.12. In the summer months birds spawn in the northern region of Tibet, and as the temperature drops, they flock towards the southern valley. The arrival of bar headed geese and black headed gulls into Lhasa has become the center of attention in city parks.[Photo/Xinhua]

Photo shows black headed gulls play in Lhasa’s Dragon Lake Park on Nov.12. In the summer months birds spawn in the northern region of Tibet, and as the temperature drops, they flock towards the southern valley. The arrival of bar headed geese and black headed gulls into Lhasa has become the center of attention in city parks.[Photo/Xinhua]