Bird Guide

Black-and-white Owl vs Ural Owl

Black-and-white Owl (Strix nigrolineata)

Black-and-white Owl

Strix nigrolineata

Large458 gForest

The black-and-white owl is a medium-sized owl with a round head and no ear tufts. It is between 35 and 40 cm in length and weigh between 400 and 535 grams. As for most owl species, females are usually bigger than males with an average weight of 487 g and 418 g respectively. It has a striped black-and-white breast, belly, and vent. With the exception of a black-and white striped collar, the upperparts from the crown to the tail are a sooty black. The facial disc is mostly sooty black, with white "eyebrows" that extend from the bill to the collar. Voice: Its call consists of a series of rapid, guttural, low calls, followed by a short pause and a low, airy call and a faint, short hoot. Occasionally, it is shortened to just the last two notes, leaving out the opening series. Moreover, the female's call usually sounds louder than the male's and individuals make fainter "hoots" near their nest.

ID text from Wikipedia, CC BY-SA 4.0

Sonogram of the Black-and-white Owl
Recorded by Rosa Elena Albornoz @rosaelena_naturaleza · Call · Valle Fresco (near Caracas), Sucre, Miranda, Venezuela · CC0
Photo: lwolfartist · CC BY 2.0
Ural Owl (Strix uralensis)

Ural Owl

Strix uralensis

Large781 gForest

Like most Strix species, it has a broad, rounded head with a correspondingly round facial disc, barring a tiny V-shaped indentation. The Ural owl has, for an owl, an exceptionally long tail that bears a wedge-shaped tip. In colour, it tends to be a plain pale greyish-brown to whitish overall (with more detailed description of their variation under subspecies), with a slightly darker grey-brown to brown back and mantle with contrasting whitish markings.

ID text from Wikipedia, CC BY-SA 4.0

Sonogram of the Ural Owl
Recorded by Grégoire Chauvot · Duet, song · Leksand, Leksand Municipality, Dalarna County, Sweden · CC0
Photo: Yana Dombrovskaya · CC BY 4.0

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Photos and recordings are credited to their authors under the licence shown. Full profiles: Black-and-white Owl and Ural Owl.