71.   The researchers studied wild budgerigars, or budgies, with fluorescent yellow patches on their crowns and cheeks.

72.   The researchers are studying how ocean winds and waves nudge the colorful debris across the Pacific.

73.   The researchers studied black-capped chickadees, birds that are socially monogamous, forming male-female couples.

74.   The researchers studied goldfish and other species with comblike structures in their mouths called gill rakers.

75.   The researchers studied lightning flashes then and found a far higher percentage than normal had a positive, as opposed to negative, charge.

76.   The researchers studied the Eastern swallowtail butterfly, which usually develops a pattern of yellow and black stripes on the wings.

77.   The researchers studied a convoluted relationship among two parasitic species, a wasp and a blue butterfly, and a European ant, Myrmica schencki.

78.   The researchers studied both DNA and protein sequences, and looked at the genes as a group and individually.

79.   The researchers studied only a small amount of feed.

80.   The researchers studied pied flycatchers that winter in West Africa and return to woodlands in Holland each spring.