Merah warblers are little passerines that range in size from 7,6 to 8,7 g (0,27 to 0,31 oz) and have a panjang of 12,5 to 13,5 cm (4,9 to 5,3 in). As a dewy person, the entirety of their body is covered in merah-colored hair, with patches of putty-colored or abu-abu-colored hair in each kepalan sibling. Sayap and the surrounding ekorn were slightly more gelap, merah kehitaman, and bermata merah muda. The skin of the animal is merah-cokelat kusam, and the majority of its tipis are abu-abu merah muda with ujung gelap. Iris was fully clothed and sat down with a kehitaman. Despite the fact that each person is somewhat more kusam or more oranye, there is some variation in the bulk between the two types of kelamin. After muslim kawin, pasangan dewasa terpisah and berkabung all the way from August.