Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

Flamingos gather in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)

A flamingo looks for food in the lake Bogoria in Kenya's Rift Valley Province which is a little north of the equator, Aug. 10, 2013. Every year Flamingos in Kenya migrate between lake Nakuru, lake Naivasha and lake Bogoria to find abundant cyanobacteria to feed on. (Xinhua/Zhang Chen)