![Thousands-of-monarch-butterflies-flying-between-the-trees-in-the-Monarch-Butterfly-Biosphere-Reserve-in-Mexico](https://videocdn.cdnpk.net/harmony/content/video/premium/partners0026/thumbnails/BB_fe3d4900-0746-4a30-89ec-771dbde48fb3_small.jpg)
Thousands of monarch butterflies flying between the trees in the Monarch Butterfly Biosphere Reserve in Mexico
1080p 00:08
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