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adjective
having a daily cycle or occurring every day
"diurnal rotation of the heavens"
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adjective
of or belonging to or active during the day
"diurnal animals are active during the day"
"diurnal flowers are open during the day and closed at night"
"diurnal and nocturnal offices"
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butterfly
diurnal insect typically having a slender body with knobbed antennae and broad colorful wings
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hawk
diurnal bird of prey typically having short rounded wings and a long tail
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falcon
diurnal birds of prey having long pointed powerful wings adapted for swift flight