Elf owl

Elf Owl is the smallest and lightest owl weighing as little as 31 g that breeds in the southwestern United States and Mexico.

These tiny owls are 12.5 to 14.5 cm long and have a wingspan of about 27 cm. Their primary projection extends nearly past their tail. They have fairly long legs and often appear bow-legged.

Elf Owls usually choose abandoned, north-facing woodpecker cavities in hardwood trees, to raise their young.

The female usually lays three round white eggs. The eggs are incubated for about 3 weeks before the chicks hatch. The young owlets fledge at about 10 weeks.

Elf Owls feed mainly on insects and therefore occupy habitats with a ready supply of these

Pygmy owl

Pygmy Owls are are the one of the smallest owl after elf owl.

These are mostly small owls, and some of the species are called "owlets". Most pygmy owl species are nocturnal and hunt mainly large insects and other small prey.

Snowy Owl

The Snowy owl is large and beautiful bird. It lives in the tundra of North America. The bird is also known in North America as the Arctic Owl, Great White Owl or Harfang. Snowy owls are white and marked sparsely with narrow, brown bars and spots.

They have rounded heads, black bills and yellow eyes. The feet of Snowy Owls are heavily feathered. Snowy Owls are not nocturnal like other owls; rather, they hunt during the day and eat their meals at night.

It is 52–71 centimetres long with a 125–150 centimetres wingspan. Also, these birds can weigh anywhere from 1.6–3 kilograms.

This species of owl nests on the ground, building a scrape on top of a mound or boulder. A site with good visibility, ready access to hunting areas, and a lack of snow is chosen. Gravel bars and abandoned eagle nests may be used.

Great Horned Owl

The Great Horned Owl is a large and heavy bird also known as the Tiger Owl, is a large owl native to the Americas. They are also know as Hoot Owls, Cat Owls or Winged Owls. They vary in colors from reddish-brown to gray or black and white. They are found in Central,, North and Suth America.

Great Horned Owls range in length from 46–68 cm and have a wingspan of 101–153 cm; Females are larger than males, an average adult being 55 cm long with a 124 cm wingspan and weighing about 1400 g.

Their call is a low-pitched but loud ho-ho-hoo hoo hoo; sometimes it is only four syllables instead of five.

Within their habitat, they can take up residence in trees that include deciduous, coniferous, and mixed forests, tropical rainforests, pampas, prairie, mountainous areas, deserts, subarctic tundra, rocky coasts, mangrove swamp forests, and some urban areas.

Their are nocturnal and prey on small mammals such s mice, rabbits, squirrels and skunks and other birds like ducks and qail.