The eyasses are expected to star on the webcam into the summer – they typically take their first flight about two months after hatching. Until then, Boh and Barb will likely be seen feeding their young meals.
The falcons were long the subject of news articles after a female named Scarlett established a nest on the ledge in 1978, outside what were then the offices of the United States Fidelity and Guaranty Co.
The arrival of a male named Beauregard in 1983 led to the first live falcon births on the ledge of the 35-story building, Baltimore's tallest, in the spring of 1984. Beauregard sired 39 falcons over a dozen years, according to records provided by the conservancy.
But after Legg Mason replaced USF&G as the building's lead tenant in the mid-1990s, the records go quiet.
The conservancy's webcam, launched this spring, renewed the public's connection to the birds of prey, the fastest-flying creatures on Earth, reaching speeds up to 200 mph as they dive-bomb pigeons and other birds.