H. severus, [177];

H. subbuteo, [176]

Hypselornis sivalensis, fossil, [36]

Hypsipetes, [504]-[506];

H. perniger, [505]

Ianthothorax, [544], [545]

Ibididae, [70], [99] f.

Ibidinae, [99], [100]

Ibidopodia, fossil, [105]

Ibidopsis, fossil, [105]