speckles
From Longman Dictionary of Contemporary Englishspecklesspeck‧les /ˈspekəlz/ noun [plural] AVMARKsmall marks or spots covering a background of a different colourExamples from the Corpusspeckles• Seeming to be merely speckles and punctures at first, actually they were tall as the highest trees.• Immatures distinguished by white speckles on forewing and lack of white neck patch.• Immature all sooty black with white speckles on upperparts.