A fourth bird was found strangled to death, police said, adding that the birds were killed inside their enclosure by an intruder who sneaked into the zoo between Monday night and Tuesday morning.
The zoo counts several flamingos among its menagerie of animals that includes rhinoceros, lions, elephants, giraffes and scores of different birds, insects and reptiles.
The zoo said three of the birds killed were more than 30 years old. The fourth was a Chilean flamingo, a species native to South America.
In June, the Baltic States will hold BALTOPS and Saber Strike 2018 drills. A US Armored Brigade will be deployed in Europe for the purpose - no less than 4,000 soldiers
The import of liquefied natural gas from the United States will not grow, even if Germany exits the Nord Stream-2 project, German Minister of Economy and Energy Peter Altmeier said