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Question for:

Austronomus australis (a species of bat), Lepidocolaptes leucogaster (a type of woodcreeper), Dorcopsis hageni (greater forest wallaby), Hemidactylus albofasciatus (viper gecko), and Myiothlypis leucophrys (warbler), all have what coloration feature in common, per their more common names? (TWO WORD ANSWER REQUIRED: color + marking)

Clues