Flamingos stand in the water of Lake Nakuru, Kenya.

Eight years ago, rising water levels in Kenya's Lake Nakuru drove away the clouds of pink coloured flamingos that were the park's biggest draw.

Rangers say their disappearance triggered a drop in visitor numbers by for the Nakuru National Park.

Now they're back.

The return has rekindled hopes of a gradual rebound in an area heavily reliant on tourists for employment and revenues.

On a recent visit, flocks of flamingos foraged for food in the lake's turquoise waters, while others flapped in a sine-wave formation above. A rhinoceros grazed nearby.

 Pink flamingos crowd together in Lake Nakuru, Kenya.

"With the increase now of the number of flamingos we have started seeing visitors also increasing," Caroline Mwebia, the park's tourism warden, told Reuters.

She declined to give visitor numbers and the Kenya Wildlife Service did not return calls seeking comment. But nearly a quarter of a million visitors came in 2011, the last year figures are publicly available for.

Flamingos eat insect larvae and algae that gives them their pink hue. High water levels shrink the birds' ideal breeding and feeding grounds.

When Nakuru lake first rose, Mwebia said, flamingos left for nearby lakes like Bogoria and Baringo whose waters were shallower.

 Flamingos eat insect larvae and algae that gives them their pink hue.

But heavy rains in recent years have also flooded those lakes, forcing the birds to return to Nakuru, where they are such an intrinsic attraction that the street leading up to the park is decorated with flamingo-shaped lampposts.

The global pandemic has battered Kenya's tourism industry, but Nakuru at least sees a bright spot on the horizon.