FaunaFocus
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The great horned owl is not only the most formidable in appearance of all owls, but it is also the most powerful.
A secondary function of a great horned owl's hooting is its challenge to others of his sex.
Certain Indian tribes regarded the great horned owl as the very personification of the Evil One.
The great horned owl is the largest of the common resident owls of the United States.
Great horned owls have been known to act as if wounded as a protest against intruders to their nests with young.
The ability of great horned owls to revolve their heads through 180° is frequently used to advantage.
Great horned owls prefer large stick nests in fairly open situations over smaller, enclosed leaf nests.
The great horned owl is the most deadly enemy of the crow, taking old and young from their nests at night.
The great horned owl is a nocturnal bird, most active in the dusk of the evening and on moonlit nights.
Of the North American species, great horned owls are one of the first to nest in the spring.
Great horned owls are not migratory, as they do not make regular seasonal journeys between breeding and wintering grounds.
Male great horned owls have a challenging, deep, rich tone of hoot contrasting the higher and huskier notes of the females.
The silent flight of the great horned owl is powerful, swift, skillful, and graceful.
Because the sense of smell is not highly developed in the great horned owl, they kill and eat many skunks.
At times the male great horned owl appears to hoot for the mere pleasure of hearing his own voice.
Great horned owl calls are divided into three main categories: hoots, chitters, and squawks.
Vaquita conservation management and action has been largely ineffective at controlling vaquita mortality in gillnets.
As well as gillnet entanglement, the vaquita is vulnerable to several other potential threats.
Mortality in gillnets has long been recognized as the most serious and immediate threat to the vaquita's survival.
The vaquita and the totoaba, a large long-lived fish species in the croaker family, have much in common.
The demand for dried totoaba swim bladders is threatening not just the totoaba but also the vaquita.
