(Portland, OR) -- The Oregon Zoo is offering discounted tickets for Presidents Day weekend. Adult admission will be 12-dollars between February 18th and the 24th, which is about half price. Tickets need to be reserved online in advance. You can reserve tickets up to 10 days before your visit. You can see orangutan mom Kitra and her 10-month old baby, Jolene. Other new arrivals include red-tailed monkeys and a crocodile monitor.