Avibase bụ ihe ọmụma gbasara nchekwa data gbasara nnụnụ nile nke ụwa, nwere ihe karịrị nde 1 nde ihe banyere ụdị 10,000 na anụ 22,000 nke nnụnụ, gụnyere nkesa ozi maka mpaghara 12,000, taxonomy, sụgharịa ya n'ọtụtụ asụsụ na ndị ọzọ.
