Branson said: “The cubs are very bouncy and playful at the moment, but at this stage are likely to be learning to hunt alongside their mother.”
Rockingham Forest Trust, which runs the site, believed the footage shows the cub’s “first forays into hunting”.
The cubs are likely to stay with their mother for a year or two before “becoming fully independent”, it added.
Its resident male otter has also been making regular appearances, leaving spraints (poo) to mark his territory.
“We don’t often get to see otters this clearly, so footage like this is always a real highlight for the team,” the trust said.