in some of its shallow say line lake in southern russia as republic of color makiya attracts countless birds some of them have journeyed thousands of kilometers to get here and while there are dozens of different species it's the pelican population that environmentalist are looking at most closely the birds have been coming to lake money for centuries but this year numbers are down. the population has fallen. last year there were about 700 and this year there are only about $500.00. that's because there were a lot of cormorants among them last year and we don't have that many ponds now to provide enough fish. the lake itself is 344 square kilometers an area and has an average depth of just 0.6 metres but the effect of global warming a causing it to shrink as the water level goes down range of beach f. explains some of the islands that pelicans nested on have become peninsulas attached to the shore. managers becoming shallow in some places which means it's accessible to predators and as soon as predators come into play the colonies gone. we have a jaeger island right here and last year