Swallowtail butterfly on a mule’s ear bloom.

A field of sunny yellow mule’s ears. They are in the sunflower family. These grow in traditionally overgrazed fields, according to my reading.

A swallowtail on a mule’s ear bloom and a riot of them in a field!

#wildflowers #butterfly #swallowtail #mulesears #colorado #coloradolandscapes