The chromatin is clumped, and uneven in disperse inside the nucleus. Usually several nests are clumped together and covered in mud. Less common than clumped distribution, uniform distribution, also known as even distribution, is evenly spaced. It has leathery, pinnate leaves and yellow, clumped flowers. People with naturally-occurring dark skin have melanosomes which are clumped, large and full of eumelanin. Unlike ice pellets, hailstones are layered and can be irregular and clumped together. Adults establish a very small territory around the nest and nests are usually clumped together. When several eggs are clumped together, they are collectively known as frogspawn. Individual groups clumped together, forming a single large mass flanked by horsemen on the wings. Roosting birds clumped together in groups of 3 to 5 individuals. When food is clumped together, only dominant hares can access it. PBS with EDTA is also used to disengage attached and clumped cells. In clumped distribution, the distance between neighboring individuals is minimized. On large scales, the pattern of distribution among individuals in a population is clumped. On small scales, the pattern may be clumped, regular, or random.