Claim: Prairie warblers weigh about 7.7 grams, has a seven inch wingspan, a tail about 1.87-1.99 inches, and is about 4.3-5.2 inches long.
Evidence: weight 7.7 g (0.27 oz) wingspan 7 in (180 mm) tail 47.5–50.5 mm (1.87–1.99 in) length 4.3–5.2 in (110–130 mm)