松树上的松毛虫丝巢，垂直行进 - 晴朗蓝天下，森林害虫的危害

l format video capture showing a large pine processionary caterpillar (Thaumetopoea pityocampa) silk nest prominently displayed on pine tree branches against a clear blue sky. The distinctive brown and white silk webbing nest is clearly visible among the green pine needles at the top of the tree, demonstrating severe pest infestation. The upward angle and blue sky background emphasize the scale and location of the nest in the tree canopy. Shot in 9:16 vertical aspect ratio, this image powerfully illustrates the environmental and health hazard posed by these dangerous pests. Perfect for pest control education, forest management content, public health warnings, mobile and social media platforms, environmental hazards awareness, tree disease identification, invasive species documentation, and ecological conservation materials for editorial and educational use.