1981, Henry Foster, The Mouse in Biomedical Research (page 96)The progeny of backcrosses and intercrosses will form some incrosses and some matings of other types.
2013, William E. Conner, An Acoustic Arms Race, Earless ghost swift moths become “invisible†to echolocating bats by forming mating clusters close (less than half a meter) above vegetation and effectively blending into the clutter of echoes that the bat receives from the leaves and stems around them.
