Poison ivy, poison oak, and poison sumac are plants that contain an irritating, oily sap called urushiol. Urushiol triggers an allergic reaction when it comes into contact with skin, resulting in an ...
🐝🌳 Often feared, but fascinating up close — the European hornet calmly drinks sweet oak sap. Discover this peaceful side of a powerful forest insect, captured in detail among bark and sunlight.
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