Red Kites have a wingspan of 1.6 metres.
If you pop over to Fineshade Woods this winter you could get a chance to see some rare birds as they take flight at dusk.
In a completely natural spectacle, up to 100 red kites swirl around in an acrobatic ballet.
Dr Chris Andrews from the RSPB runs winter walks that include a tour to the red kites roosting area.
He said: "There are a few experiences that snatch your breath away and this is one."
Red kites were extinct in England by the start of the 20th Century, but were reintroduced to Rockingham Forest 14 years ago by the RSPB, English Nature and The Forestry Commission.
Rockingham now has more than 700 red kites in the forest and surrounding area.
The RSPB has been running winter walks for three years. The event begins with a talk at the Top Lodge centre which is located off the A43 between Corby and Stamford.
Participants can then travel seven miles to the roost where at dusk, the kites take to the air at once.
Chris Andrews said: "These birds of prey put on a fantastic display spiralling above your head."
The event starts on Sunday 15 November and run every Sunday and Wednesday until 31 January, starting at 2:30 pm until dusk. You have to book a place for the tour.
For more information contact Chris Andrews on 01780 444691 or take a look at