DENVER - The Denver Zoo is hoping you will come down and celebrate a very special "BertDay" this upcoming week.
Bert the hippopotamus, who happens to also be the zoo's oldest resident, is celebrating his 57th birthday starting Friday.
Thinking about skipping out because you don't have a gift?
Don't worry, there's a hippo-sized birthday card to sign. A nostalgic collection of clippings from Bert's days at the zoo will also be on display.
He will also get a special hippo treat at 11 a.m. each day leading up to his official birthday on Aug. 21.
The zoo says everyone who has "Bert" in their name is invited to visit the zoo for free Aug. 16 to Aug. 21. Names including Bert, Robert, Roberta, Bertha, Herbert, Norbert, Berthold as well as all guests who are 57 years old also receive free admission.
Present your ID at the ticket counter when you check in and get in free in honor of Bert's celebration.
Bertie, affectionately called Bert, arrived at the zoo on Dec. 16, 1958 from Central Park Zoo.
Bert, the first hippo at Denver Zoo, is the father of every hippo calf born at the zoo. He's only had two mates but is the proud papa to 29 hippopotamuses.
To learn more about Bert and for zoo hours, visit http://bit.ly/1c4LY8J.
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