The birdies are the same size and weight, but do come in colors.
There is currently no difference in dimensions of a badminton court between a singles or doubles game of badminton. The court is rectangular and divided into halves by a net. Courts are almost always marked for both singles and doubles play, although the laws permit a court to be marked for singles only. The doubles court is wider than the singles court, but both are the same length. The exception, which often causes confusion to newer players is the doubles court has a shorter serve-length dimension. The full width of the court is 6.1 metres (20 ft), and in singles this width is reduced to 5.18 metres (17 ft). The full length of the court is 13.4 metres (44 ft). The service courts are marked by a centre line dividing the width of the court, by a short service line at a distance of 1.98 metres (6.5 ft) from the net, and by the outer side and back boundaries. In doubles, the service court is also marked by a long service line, which is 0.78 metres (2 ft 6 inch) from the back boundary. The net is 1.55 metres (5 ft 1 inch) high at the edges and 1.524 metres (5 ft) high in the centre. The net posts are placed over the doubles side lines, even when singles is played. There is no mention in the Laws of badminton, of a minimum height for the ceiling above the court. Nonetheless, a badminton court will not be suitable if the ceiling is likely to be hit on a high serve.
Pickleball is played on a court that is the same size as a badminton court (20 feet wide by 44 feet long). The net is set at 36 inches high on the edges and 34 inches in the middle.
There are a set of lines on each court that dictate the boundary lines. For doubles, during the serve, the boundaries are the widest at the sides and short at the back (the innermost lne), and after the serve, it's full court, meaning the boundaries expand to the all of the outermost lines. For singles, from serve to game start, the boundaries will remain the same - the sidelines are the innermost lines and the back line is the outermost line.
It depends on your age group. Infants have a completelty different size to the Adult or even the Junior! It is harder longer and thicker (and has hairs) ;)
size of the handball court