Based on the search results, it appears that "Opium Birds" is a term that refers to a collection of bird-like creatures created through artificial intelligence. These creatures are not real and there is no scientific evidence of their existence. The term "Opium Bird" has been used to describe different things, such as an 18th-century opium weight from Burma that is shaped like a bird. The term has also been used in the context of a meme, where users refer to a bird-like creature with a fur coat as "Erosion Bird" or "Opium Bird". This creature is not real and is a product of artificial intelligence. In summary, an "Opium Bird" is not a real bird or animal, but rather a term used to describe different things, such as AI-generated bird-like creatures or an opium weight shaped like a bird.