Several kinds of owls --including screech owls, northern saw-whet owls, elf owls
and barred owls--nest in old woodpecker cavities and natural cavities in trees or in the West, saguaro cactuses.
Two adult female elf owls
(Micrathene whitneyi) were treated with leuprolide acetate depot injections to prevent egg laying.
The possible occurrences in the area of species with restricted distributions in the United States and with breeding ranges extending into much of Mexico, such as elf owls (Micrathene whitneyi) and ferruginous pygmy-owls (Glaucidium brasilianum), were of particular interest.
We did not include calls of elf owls elicited by playback in estimates of abundance.
Her yard was famous for the generations of elf owls
that returned year after year to nest in the same saguaro cactus to raise their families.
Several owl boxes will attract elf owls
and would give you a better chance to see those elusive creatures.
Nighttime is when the kangaroo rats, elf owls
and various snakes come out.
There are elf owls
that dig nest holes inside the cactuses, katydids that move into the holes, packrats that nest in cactus shade, coyotes that eat the rats, and many more.
Only once in a while do elf owls manage to catch a mouse or lizard.
One hunting trick of elf owls is to hang upside down in a large agave (uh-GAH-vee) plant and flap their wings against the blossoms.
After the flickers and woodpeckers abandon their nests, the sites are quickly taken over by other birds such as elf owls
, sparrow hawks, and purple martins.
We observed three elf owls
that evening, two adults and a juvenile.