Nnụnnụ ugwu ugwu na-eji:
- n’afọ niile, dịka ọmụmaatụ ngalaba;
- maka ịtọ akwa. Nnụnụ ndị bi n'ụsọ oké osimiri na-enye ụmụ n'etiti nkume, dịka ọmụmaatụ, eju mmiri ash America;
- n'oge ụgbọ elu gaa mpaghara ọkụ maka ezumike. Umu nnụnụ, nnụnụ mmiri, ndị na-eri anụ na ndị ọzọ na-akwụsị n’ugwu.
Ọnọdụ ebe obibi n'ugwu ndị ahụ siri ike, ya mere nnụnnụ ndị nwere ugwu dị iche na ndị ikwu ha bi n'oké ọhịa na ala ahịhịa. Ha nwere ozu buru ibu iji guzogide ike nke ifufe, nku, oké, ha na-echebe site na ifufe oyi. Omume iri nri dabara na obere nri a na-enweta site na okwute na ahịhịa ndị na-adịkarị obere.
Ugo nke na-acha ọla edo
Griffon udele
Oriole
Ugbo ogige
Robin
Magpie
Nightingale nke ọwụwa anyanwụ
Onye isi oji
Ngwa ngwa
Andean condor
Ular
Nwa afụ ọnụ
Nutcracker
Teterev
Mountain wagtail
Onye nwere nku uhie uhie
Nkịtị kestrel
Ikwiikwii Ugo
Ahuru nkume thrush
Ndi ozo nke umu nnunu ugwu
Punochka
Uhie-lumbar ilo
Nkume ilo
Lanner (Mediterranean agụ)
Tundra partridge
Alpine accentor
Alpine jackdaw
Nwa nnụnụ snow
Agba-acha odo odo
Mmiri
Lemọn finch
Horsenyịnya ugwu
Ugoloọma
Black Redstart
Bchụ nta ugwu
Nkume okwute
Chushitsa
Udele
Black piebald afụnwu ọkụ
Egbe ugo
Broadtail
Mmechi
Nnụnụ ndị dị n’elu ugwu na-adị ndụ n’ebe dị elu ma adịchaghị uru nke ndụ. Anụmanụ na-efe efe agbanweela mgbanwe na mmegharị, nke gụnyere:
- mgbanwe mgbanwe gas;
- mgbasa ngwa ngwa nke oxygen na eriri anụ ahụ;
- nku ube na-abawanye, nke na-ebelata ụgwọ ume ike ikuku n’ikuku.
Elu dị elu na-esiri nnụnnụ ike ịfe, arụmọrụ ụgbọ elu na-emetụta:
- ikuku ikuku;
- okpomọkụ;
- njupụta ikuku.
Ihe ndị a na-egbochi biomechanics nke ahụ avian (na-ebuli ma na-efegharị).
Otú ọ dị, ibi n’elu ugwu nwekwara ihe ndị dị mma. Nnụnụ anaghị ata ahụhụ na nnyonye anya mmadụ.
