From Conserve Wildlife Foundation of NJ:
Back in 2015, a new pair of falcons took up residence at 101 Hudson Street, and while they appeared to be mature birds, they did not lay any eggs last season. So we've been anxiously spying on these two birds, waiting and hoping, waiting and hoping, waiting and hoping...
At last! On Sunday, April 17, female 41/AX laid the first egg of the season. She seemed to be rather enamored of her first egg! This is the first nesting attempt for these two newbies.
Peregrines do not begin incubating, though, until they have a full clutch of three or four eggs. No one should worry - if the egg(s) are sitting there alone on the inside camera, we can be sure the adults are very close by and have total watch over their nest. On warmer days adults may not sit with and brood the eggs, but they will usually brood all night. Learn more by reading our Nestbox News.