 The Dalmatian pelican is the rarest species with a population estimated at between 10 @,@ 000 and 20 @,@ 000 following massive declines in the 19th and 20th centuries . The main ongoing threats include hunting , especially in eastern Asia , disturbance , coastal development , collision with overhead power lines and the over @-@ exploitation of fish stocks . It is listed as Vulnerable by the IUCN Red List of Threatened Species as the population trend is downwards , especially in Mongolia where it is nearly extinct . However , several colonies are increasing in size and the colony at the Small Prespa Lake in Greece has nearly 1000 breeding pairs . 
