While everyone is familiar with the squirrels that dwell on campus, there have been a surprising number of sightings of more predatory creatures—hawks.

Anja C. Slim, a postdoctoral fellow at the School of Engineering and Applied Sciences, snapped these photos of a red-tailed hawk nest earlier this week outside of Pierce Hall (29 Oxford Street, Cambridge) with her husband Joel C. Miller, a postdoctoral fellow at the School of Public Health.

Slim said that the hawks, which usually mate for life, have been spotted by colleagues in the same location since 2003.

Enjoy the photos!