Shades of Grey (Squirrels Mating)

Wrote reader Gini Moore:

I captured quite a unique photo today. I call it Shades of Grey. I had never seen squirrels mating before and, of course, had never seen two different shades of grey squirrels in flagrante delicto.

A Wikipedia article on black squirrels explains: Eighteen Canadian black squirrels were released at the National Zoo in Washington, D.C., near the beginning of the 20th century during President Theodore Roosevelt's administration.

Since their introduction, the population of black squirrels in and near Washington has slowly but steadily increased, and black squirrels now account for up to half of the squirrel population in certain locations, such as the grounds of the Washington National Cathedral.