Black and white puffbird perched atop a tree branch with a blurred…

Silver coin with a head of a man on it against a white background

Silver coin with an image of a man on it against a white background

Black and white drawing of a building with a clock tower

Open book with a drawing of a group of people in the woods

Close up of a rock with a bunch of green algae growing on it

Green frog sitting atop a plant in the water

Close up of a plant with pink flowers

Close up of a person&#39;s hand holding a piece of black lichen