... Aegolius Aegolius funereus Boreal Owl N, C and SE Europe to Ural Mts. (Russia) Linnaeus, 1758 Aegolius funereus ... ridgwayi Unspotted Saw-whet Owl Costa Rica and W Panama Alfaro, 1905 Aegolius ridgwayi tacanensis ...
... Aegolius ridgwayi. In IUCN Red List of Threatened Species, version 2014.3, http://www .iucnredlist.org/details/22689371/0. Blancher et al. 2013. Briggs 1954. Butchart, S., and J. Ekstrom. Southern saw-whet owl Aegolius ridgwayi ...
... Aegolius funereus ; it is white below with reddish streaks and a streaky - looking reddish face without a dark ruff . Note the white spots on the scapulars . New York , USA , March ... Aegolius ridgwayi L 18–20cm, Wt c. Forest owls 445.
... Aegolius acadicus See E , W , or T Memo : Small , earless ; broad brown streaks below . Immature chocolate - brown ... ridgwayi 7-72 Pl . 16 Field marks : A small tuftless owl , differing from the Northern Saw - whet and all other ...