Image of a flock of red knots

A flock of red knot • Photo by Don Faulkner (CC BY-SA 2.0)

A red-winged blackbird singing while perched on a cattail

Red-winged blackbird • Photo © Tom Raymo

Image of a gecko climbing on a pane of glass

Photo by Michaela Kliková on Unsplash

Image of a woodland creek

Photo by Dylan Luder on Unsplash

Image of a drainage ditch beside a green field

Photo by Leslie Cross on Unsplash

Image of a long-billed bird with a distinctive crown of feathers

A hoopoe • Photo by Hans Veth on Unsplash

Image of goldenrod stems with swollen galls

Goldenrod galls • Photo by SriMesh (CC BY-SA 3.0)

Close-up image of several ants

Photo by Prince Patel on Unsplash

Close-up artistic photograph of a cabbage leaf

Detail from “Cabbage Leaf,” by Edward Weston, 1931.

Image of wooly aphid hanging from plant stem

Wooly aphid • Photo by Melissa McMasters (CC BY 2.0)