John Cancalosi / Great horned owl (Bubo virginianus) chick stretching its wings in nest in a Saguaro (Carnegiea gigantea), is groomed by its parent, Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Great horned owl (Bubo virginianus) grooming chick in nest in a Saguaro (Carnegiea gigantea), Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Great horned owl (Bubo virginianus) chick moving around in nest in a Saguaro (Carnegiea gigantea), with parent nearby, Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Great horned owl (Bubo virginianus) and three chicks sleeping in nest in a Saguaro (Carnegiea gigantea), Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Harris hawk (Parabuteo unicinctus) fledgling, practicing flying shortly before leaving the nest in a Saguaro cactus (Carnegiea gigantea), Sonoran Desert, Arizona, USA.
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John Cancalosi / Harris hawk (Parabuteo unicinctus) perched on a Saguaro cactus (Carnegiea gigantea) while preening, Sonoran Desert, Arizona, USA.
