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The great grey owl (Strix nebulosa) (also great gray owl in American English) is a true owl, and is the world's largest species of owl by length. It is distributed across the Northern Hemisphere , and it is the only species in the genus Strix found in both Eastern and Western Hemispheres.
In the boreal forests, both the northern hawk owl and great grey owl appear to be in greater danger of great horned owl predation in years where the snowshoe hare have low populations. [161] [162] Great horned owls were the leading cause of mortality in juvenile spotted owls (30% of losses) and juvenile great grey owls (65% of losses).
Blakiston's fish owl measures 60 to 72 cm (24 to 28 in) in total length, and thus measures slightly less at average and maximum length than the great gray owl (Strix nebulosa), a species which has a significantly lower body mass. [6] [15] The Eurasian eagle-owl (B. bubo) is sometimes considered the largest overall living owl species.
The wingspan of the great potoo and the oilbird can be more than 1 m (3.3 ft), the largest of the order. [71] [72] The largest species of the nightjar family, the great eared nightjar (Eurostopodus macrotis) of East Asia, is of smaller proportions. Great eared nightjars can reach 150 g (0.33 lb) in weight and 41 cm (16 in) in height. [73]
[8] [18] Also, although 9 cm (3.5 in) shorter than the largest of the latter species, the Eurasian eagle-owl can weigh well more than twice as much as the largest great grey owl. [5] [20] The Eurasian eagle-owl typically has a wingspan of 131–188 cm (4 ft 4 in – 6 ft 2 in), [5] with the largest specimens possibly attaining 2 m (6 ft 7 in).
The black-capped chickadee is the state bird of Massachusetts. This list of birds of Massachusetts includes species documented in the U.S. state of Massachusetts and accepted by the Massachusetts Avian Records Committee (MARC). As of July 2023, there are 516 species included in the official list. Of them, 194 are on the review list (see below), six have been introduced to North America, three ...
This clip of a Great Gray Owl and her owlets is actually part of a longer video made by a family on YouTube a few years ago in which two teenagers observe and document the birth, caretaking, and ...
Snowy owl, Bubo scandiacus; Northern hawk owl, Surnia ulula (R) Northern pygmy-owl, Glaucidium gnoma; Burrowing owl, Athene cunicularia; Spotted owl, Strix occidentalis; Barred owl, Strix varia; Great gray owl, Strix nebulosa; Long-eared owl, Asio otus; Short-eared owl, Asio flammeus; Boreal owl, Aegolius funereus; Northern saw-whet owl ...