Personnel from Mass. Wildlife on June 5 banded two peregrine falcon chicks on the roof of the Du Bois Library.
The larger female chick showed some developing flight and tail feathers. The smaller male was still nearly completely downy white. The banding team also discovered an egg that failed to hatch.
This is the fourth successful nesting season atop the Library. Last year, three chicks were hatched.
On June 20, a peregrine fledgling was found on a Library courtyard railing and had to be returned to the nest box by Dick Nathhorst of Facilities and Campus Planning.
There are only 12 nesting pairs of peregrine falcons in the state.