It was once believed that all swans are white. In 1697, in Australia, the Dutch explorer Willem de Vlamingh first discovered black swans. Willem de Vlamingh was the first European to explore Western Australia. He discovered a swan river and took several black swans to transport them to Europe. Until then, Europeans believed that all swans are white. Black swans are official birds of Western Australia and are represented on the flag and on the coat of arms.
The safari and zoo in Ramat Gan near Tel Aviv is the largest zoological center in the Middle East. Scientific research is carried out at the zoo, and there is a veterinary clinic. The territory of the zoo is beautifully designed and conveniently equipped. My biggest tip before visiting the zoo: Don't be lazy to walk.