No, they are not nocturnal, however, they are are diurnal, generally travelling in pairs or small family groups.
No, the hornbill is a bird
what do rhinoceros hornbill
Southern Ground Hornbill was created in 1825.
Rhinoceros Hornbill was created in 1758.
Narcondam Hornbill was created in 1873.
Rufous Hornbill was created in 1766.
Samar Hornbill was created in 1890.
Tarictic Hornbill was created in 1783.
Mindanao Hornbill was created in 1877.
Jackson's Hornbill was created in 1891.
Sumba Hornbill was created in 1897.
Piping Hornbill was created in 1852.