You're welcome, tsa. Indeed, we learn from each other and that's one of the main aspects the forum can offer.
Actually, female common tailorbird has a tail of more reasonable length. So the bird in the photo may be a female. It also appears to have some dark feather bases on face and throat but rufous-capped babbler doesn't.
Their call is different. You will have many chances to get familiarize with their calls.
Rufous-capped babblers seem to appear in a limited area. So far I only see them in TPK. Hope the above helps.