Custody of a Minor

Upon a second review and redetermination, under G. L. c. 119, § 26, last par. (as amended through St. 1983, c. 117), concerning the care and custody of a minor, a District Court judge ordered the termination of visitation by the minor’s biological mother. The mother’s appeal under G. L. c. 119, § 27, raises questions about the scope of review and burden *92of proof applicable in the “review and redetermination of the current needs of [the] child” available every six months under § 26.

If, as here occurred, the custody order is altered, the mother argues that such a revision must be supported by a…