Great reed warblers are one of the larger warblers with masses of 21 to 51 grams and a typical length of 20 centimeters. The wings are long and rather pointed at the end. They have a brown color above and a whiter shade on the underbelly.
Range mass: 21 to 51 g.
Range length: 19 to 20 cm.
Average wingspan: 26 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike