Species Spotlight : Burrowing Owl
The burrowing owl is a pint-sized
bird that lives in open, treeless areas. The burrowing owl spends most
of its time on the ground, where its sandy brown plumage provides
camouflage from potential predators. One of Florida's smallest owls, it
averages nine inches in height with a wingspan of 21 inches. The
burrowing owl lacks the ear tufts of the more familiar woodland owls.
Bright yellow eyes and a white chin accent the face. Unusually long legs
provide additional height for a better view from its typical
ground-level perch.
HABITAT AND RANGE
The Florida burrowing owl occurs throughout the state although its
distribution is considered local and spotty. The presence of burrowing owls
is primarily dependent upon habitat. Humans have created new habitat for
burrowing owls by clearing forests and draining wetlands. Burrowing owls
inhabit open native prairies and cleared areas that offer short groundcover
including pastures, agricultural fields, golf courses, airports, and vacant
lots in residential areas. Historically, the burrowing owl occupied the
prairies of central Florida. Recently, these populations have decreased
because of disappearing habitat while populations in south Florida coastal
areas have increased due to modification of habitat by humans.
HABITS
Burrowing owls live as single breeding pairs or in loose colonies consisting of
two or more families. Unlike most owls, burrowing owls are active during both
day and night. During the day, they are usually seen standing erect at the mouth
of the burrow or on a nearby post. When disturbed, the owl bobs in agitation and
utters a chattering or clucking call. In flight, burrowing owls typically
undulate as if they are flying an invisible obstacle course. They also can hover
in midair, a technique effective for capturing food.
FOOD
Burrowing owls mainly eat insects, especially grasshoppers and beetles. They can
be of special benefit in urban settings since they also consume roaches and mole
crickets. Other important foods are small lizards, frogs, snakes, birds, and
rodents.
BURROWS
Burrowing owls use burrows year-round; for roosting during the winter and for
raising young during the breeding season (Feb – July). Florida's owls typically
dig their own burrows but will use gopher tortoise or armadillo burrows. Burrows
extend 4 to 8 feet underground and are lined with materials such as grass
clippings, feathers, paper, and manure.
EGGS
Eggs are primarily laid in March but nesting can occur from October through May.
The female lays six to eight eggs over a one-week period. She will incubate the
eggs for 21 to 28 days.
YOUNG
At hatching, the young owls are covered with white downy feathers and have their
eyes closed. They emerge from the burrow when they are 2 weeks old. At 4 weeks,
they are learning to fly but cannot fly well until 6 weeks old. They remain with
their parents until they are 12 weeks old.
MORTALITY
Burrowing owl eggs and young succumb to a variety of predators including snakes,
opossums, raccoons, skunks, and cats and dogs in urban areas. In suburban areas,
preferred nesting areas and nests may be lost or destroyed by construction
activities, malicious destruction or harassment by people, and flooding of
burrows during heavy rains. Collisions with automobiles take a heavy toll on
adults and young owls.
PROTECTION
The Florida burrowing owl is classified as a "species of special concern" by the
Florida Fish and Wildlife Conservation Commission. This means burrows, owls, and
their eggs are protected from harassment and/or disturbance by state law.
Burrowing owls are also protected by the federal Migratory Bird Treaty Act.
WHAT YOU CAN DO TO HELP
- Install T-perches near owl burrows. Perches provide burrowing
owls with an elevated view of the nest area, and also make the burrows more
visible to mowing machine operators. Many burrows collapse each year when
mower tires pass near the burrow entrance. If you put up perches, be sure that
you keep the grass and weeds trimmed low around the burrow to give the owls
the unobstructed view that they need to avoid predators.
- Restrict use of pesticides. Because burrowing owls
feed on insects that are considered pests around homes, they are exposed to
the insecticides you use. Pesticides decrease and possibly contaminate food
available to owls. Explore options other than using pesticides, but if you
continue to use them, please do so with caution.
- Attracting owls to your lawn. Burrowing owls may dig
burrows in sodded yards if vacant lots are scarce. To attract a pair, remove a
1-2 foot circular plug of sod from the lawn. This exposes the sandy soil
needed by the owls for burrowing. You might also start the burrow and place a
pile of loose sand near the mouth. Placing a T-perch near the burrow can help
draw it to a pair's attention.
-
Report malicious destruction or harassment of burrowing owls or their
nests. 1-888-404-FWCC (3922).
Where you can find
burrowing owls