Final answer:
The claim that there are around 1000 bird species worldwide is false. In reality, there are approximately 10,000 living bird species, and a continuous discovery of new species is taking place, even as many face the threat of extinction.
Step-by-step explanation:
The statement that there are around 1000 species of birds worldwide is false. There are about 10,000 living species of birds, and they live in diverse habitats across all seven continents. These birds range in size from the tiny two-inch bee hummingbird to the nine-foot ostrich, reflecting the incredible diversity within the class Aves.
The vast majority of bird species can fly, although there are some notable exceptions. It's also important to note that bird species are continually being discovered, with almost 300 new species added since 1950. However, many of these new species are threatened or already extinct due to human activities.
Moreover, today approximately 1,200 bird species are threatened with extinction. Conservation efforts must be enacted to protect these vital members of our global ecosystem.