is a newly described family of small insectivorous birds
formerly placed in the Old World warbler family
The species are of various sizes, often green-plumaged above and yellow below, or more subdued with greyish-green to greyish-brown colours, varying little or not at all with the seasons. The tails are not very long and contain 12 feathers (unlike the similarAbroscopus
species, which have 10 tail feathers). Many species are more easily identified by their distinctive songs than their dull plumage.
From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Phylloscopidae