animal

Cold swim

Throwback Thursday: A beaver, wearing a tiny ice hat, takes a swim in the cold water of the Tevatron ring pond. Photo: Tim Chapman, nature, wildlife, animal, mammal, beaver, pond, winter

A beaver, wearing a tiny ice hat, takes a swim in the cold water of the Tevatron ring pond.

Throwback Thursday: An American kestrel alights at the FAST facility. According to Wikipedia, the American kestrel (Falco sparverius) is the smallest and most common falcon in North America. Photo: Jamie Santucci, nature, wildlife, animal, bird, American kestrel

Throwback Thursday: An American kestrel alights at the FAST facility. According to Wikipedia, the American kestrel (Falco sparverius) is the smallest and most common falcon in North America.

Post hawk

A red-tailed hawk poses for its picture across the street from the SiDet building. Photo: Luke Martin, nature, wildlife, animal, bird, hawk, landscape

A red-tailed hawk poses for its picture across the street from the SiDet building.

Too cold!

A clouded sulphur butterfly appreciates the sun's warming rays on this 26-degree Fahrenheit morning. Photo: Jeff Simmons. wildlife, animal, nature, butterfly, insect, clouded sulphur butterfly

A clouded sulphur butterfly appreciates the sun’s warming rays on this 26-degree Fahrenheit morning, Nov. 22.