This video from the Cornell Lab of Ornithology in the USA says about itself:
19 April 2016
The first signs of pipping on an egg were spotted on the Cornell [red-tailed] Hawks Cam around 12:30 PM today! Check out this video for a glimpse of the “star crack” as Big Red takes a moment to roll the eggs.
From the Cornell Lab of Ornithology in the USA today:
Around midday on April 19th, the barest hints of a pipping star were seen on an egg as Ezra rearranged the clutch. It can take as long as 48 hours after pipping till the first sight of a downy hatchling, making it likely the first egg will hatch today. If you miss today’s hatch there are two more eggs primed to hatch in the coming days. Watch cam.
In addition to the hawks, our Texas Barn Owls are nearing a hatch date of their own, predicted to begin around April 23. If we’re lucky, both nests—hawks and owls—will be hatching out at the same time! Don’t miss this opportunity to watch a baby owl take its first view of the outside world. Watch cam.