Bird numbers on a global decline
Bird populations are declining around the world. While many factors contribute to this decline, there is no denying that climate change caused by humans is the most important driver behind this worrying trend. When climatic conditions of their living environment change, birds may have difficulty adapting quick enough to survive within their natural range. Warming temperatures are changing where birds live, the timing of their migration patterns and egg laying, and even the sizes and shapes of their bodies. Out of the approximately 11,154 known bird species, 159 (1.4%) have become extinct, 226 (2%) are critically endangered, 461 (4.1%) are endangered, 800 (7.2%) are vulnerable and 1,018 (9.1%) are near threatened.