This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows a western monarch butterfly in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)
This photo taken on Nov. 28, 2023 shows western monarch butterflies in a forest of Santa Cruz, California, the United States. (Photo by Li Jianguo/Xinhua)