Original sentence: They are all similar in general structure and habits, and have often been placed in a single genus, although, as of 2009, they are now split into three genera: Pitta, Erythropitta and Hydrornis.They are mostly found in forests, but some live in scrub and mangroves.They are popular with birdwatchers because of their bright plumage and the difficulty in seeing them
Edited sentence: They are all similar in general structure and habits, and have often been placed in a single genus, although as of 2009 they are now split into three genera, Pitta, Erythropitta and Hydrornis.They are mostly found in forests but some live in scrub and mangroves.They are popular with birdwatchers because  of their beautiful plumage and the difficulty in seeing them