Little owl (Athena noctua) perched inside an hollow oak tree, England

quercus sp athene noctua quercus athene fagaceae fagales dicotyledoneae angiospermae spermatophyta / phanerogamae tracheophyta embryophyta chlorobionta archaeplastida eukaryota strigidae strigiformes aves vertebrata quercus sp athene noctua spring adult alone trunk (botany) posing portrait overview england look tree oak (quercus sp) three quarter shot quercus nocturnal little owl (athene noctua) athene hole cites appendix 2 least concern (iucn) lc april nobody adults single lonely only solo one lone trunks (botany) posed pose settlings settling portraits overviews global sight global sights full length looked looking trees oaks (quercus sp) three quarter views three quarter view three quarter shots three quarter sight three quarter sights three quarter length nocturnals holes cavity cavities least concern species with nobody temperate season seasons atmosphere stage of development individual enumeration morphology (botany) morphology organism shot great britain united kingdom european union europe woody plant fagaceae family fagales order flora fagaceae fagales dicotyledoneae angiospermae spermatophyta / phanerogamae tracheophyta embryophyta chlorobionta archaeplastida eukaryota behavior owl nocturnal bird of prey nocturnal bird bird wild animal strigidae strigiformes aves vertebrata general morphology convention on international trade in endangered species of wild species low risk (iucn) lr iucn red list of threatened species