This video from the USA says about itself:
Early in the afternoon of March 20, 2013, Big Red laid her third egg of the breeding season at 15:13 EDT, 3 days after the second egg was laid, and 6 days after the first egg.
The Cornell Lab of Ornithology writes about this:
Red-tails Return to Bird Cams With a Trio of Eggs
The hawks threw us a curve by deciding to nest in a new site—our Bird Cams team just managed to set up a camera before the eggs arrived on March 14, 17, and 20. (Picture quality is generally excellent, although viewers may see occasional brief outages as we finalize network connections over the next two weeks.) If the eggs hatch on a schedule similar to last year, start looking for fuzzy chicks around April 21. Watch on our live cams.
- Red-tailed hawk nest webcam (dearkitty1.wordpress.com)
- Cornell HawkCam is back! (whyevolutionistrue.wordpress.com)
- A real battle of the birds in Harmar (triblive.com)
- Hawk Cam Returns for Third Season (cityroom.blogs.nytimes.com)
- Red-tailed Hawk taking a bath (bobzeller.wordpress.com)
- How To Build an Urban Hawk Nest (outwalkingthedog.wordpress.com)
- A Hawk-Watching Quiz on the Prairie, Crossley Style (birds.cornell.edu)