miRNA families that are unique for Aves:

miR-4289	miR-1684	miR-2976	miR-2972	miR-1567
miR-544	miR-3148	miR-1583	miR-1668	miR-1580
mir-135	miR-1608	miR-331*	miR-3523	miR-2067
miR-30b	miR-3540	mir-317	miR-3529	miR-1797
mir-2833	miR-4016	mir-2954	miR-1345	miR-1790
miR-1744*	miR-1576	miR-4261	miR-2989	miR-2260
miR-4001f	mir-221	mir-244	miR-3598