What is it?

Flowers of Red Maple (Acer rubrum)

Muskrat (Ondatra zibethicus)

Mourning Cloak Butterfly (Nymphalis antiopa)

Spring Peeper (Pseudacris crucifer)

Black-and-white Warbler (Mniotilta varia)

Eggs of American Toad (Anaxyrus americanus)

Black Knot Fungus (Apiosporina morbosa) on Black Cherry (Prunus serotina)

Wood Anemone (Anemone quinquefolia)