U.S. pop star Madonna walks while holding her adopted Malawian son David Banda at a school she financed, some 50 km south of Malawi's capital Lilongwe, March 30, 2009. A court in Malawi is expected to rule on Friday whether Madonna can adopt a second child from the southern African country, a move likely to be opposed by human rights groups. Madonna appeared in court on Monday seeking to adopt a four-year-old girl, Mercy James. The case was adjourned until April 3. [Agencies]