Do Birds Have Testicles Yes, birds do have testicles. However, unlike in mammals, they’re neatly tucked inside their bodies. This is a clever evolutionary adaptation that promotes more efficient flight. The size of their testicles can change throughout the year, especially around breeding seasons. There’s also a fascinating variety in their reproductive anatomy and behaviours, … Continue reading Do Birds Have Testicles | TOP FACTS AND MYTH OF MALE BIRD