This category deals with the biology of birds in the family Corvidae. Corvids include:

• Crows (Genus Corvus)
• Ravens (Genus Corvus)
• Jays (Genera Platylophus, Gymnorhinus, Cyanocitta, Aphelocoma, Cyanolyca, Cyanocorax, Garrulus, and Perisoreus)
• Magpies (Genera Pica, Platysmurus, Cissa, Urocissa, and Cyanopica)
• Treepies (Genera Dendrocitta, Crypsirina, and Temnurus)
• Various Magpie-Jays, Bush-Crows, Ground-Jays, Nutcrackers, Choughs, Piapiacs, Jackdaws, and Rooks.

The typical corvid is an insectivore or omnivore, nesting in trees, and raising one clutch a year.