The largest is that of the ostrich and the smallest is that of a tiny species of hummingbird. Not coincidentally, the ostrich (Struthio camelus) is the largest bird in the world and measures up to 2.7 meters in height. Its egg is about 20 centimeters long and weighs an average of 1.5 kilograms, but according to the Guinness Book of Records, the largest ever found weighed an incredible 2.48 kilograms! To give you an idea, a chicken egg weighs 55 grams and measures 6 centimeters. In the past, other animals have already laid larger eggs, such as the elephant bird of Madagascar, which became extinct in the 16th century. It is believed that it reached 3 meters in height and its eggs reached 12 kilos and 30 centimeters. Some dinosaurs from the sauropod group also had huge eggs, about 50 centimeters long. The opposite end of the ranking is occupied by the hummingbird. Some species of this bird, such as the verbena (Mellisuga minima), found in Jamaica, Puerto Rico and other Caribbean nations, lay eggs that measure less than 10 millimeters. Outside the world of birds, there are also some insects, reptiles, fish and small vertebrates that lay almost microscopic eggs. 8-#
The weight of a hummingbird egg is less than 1 gram: the egg weighs, on average, 0.365 grams
Despite being large, the ostrich is the bird that lays the smallest egg in relation to its size: the egg is only 1.5% of the weight of the female.
The shell of an ostrich egg is extremely resistant, thanks to its high concentration of calcium carbonate, and can withstand the weight of an adult male sitting on it.