A trail camera at a nature reserve in Fort Myers has captured new footage of a Florida panther mother with three young cubs, offering a promising sign for the endangered species' recovery. The sighting is significant because it occurred farther north than where the endangered cats are usually seen in the state.

Experts say the footage indicates the panthers are expanding their breeding range, which could help the population recover. Florida panthers are an isolated population of the North American cougar, a species of large, solitary wild cats that range mostly in western North America and most of South America. There are thought to be some 200 individuals living in southern Florida.

Florida has spent decades trying to protect its panthers, primarily from encounters with cars and from a shrinking natural habitat. The cats' natural habitat has been reduced by about 95 percent from its original expanse.

The trail camera video shows the mother and three young cubs moving through the Fort Myers nature reserve. The expansion of the breeding range north of their typical territory represents a potential turning point for a species that has faced severe population pressures from both vehicle collisions and habitat loss throughout southern Florida.