The Rose Island Lighthouse Foundation has started a $100,000 campaign to restore the habitat for herons and other shoreline birds on the 17-acre island in Narragansett Bay.

The foundation’s executive director, David McCurdy, tells the Newport Daily News  that there were about 300 pairs of herons laying eggs on the island a decade ago, but now there are none.

Some experts believe the disappearance has to do with the impact of humans, but others say it could be changes in the food supply or an overgrowth of brush on the island.

The foundation plans to clear out specific areas and plant cedar trees to attract the birds.