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                Ferruginous Hawk

                Ferruginous Hawk

                Ferrugineous rough-leg

                Buteo regalis
                Population size
                Life Span
                20 yrs
                TOP SPEED
                160 km/h
                980-2030 g
                50-66 cm
                134-152 cm

                Ferruginous hawks are the biggest hawks in North America. Females may be as much as one-and-a half times larger than males. Adults are a rusty color on their shoulders and back and down to their legs. The belly is whitish, spotted with reddish brown. The leg feathers make a V shape against the hawk's belly, as seen when they are flying. When perching, the gray tips of the long, broad wings can reach the tip of their tail, which is white, gray and rust colored. Young Ferruginous hawks don’t have rust colored legs and there is less color on their backs.


                The Ferruginous hawk occurs in western and central part of North America. Its range stretches from the southern Canada to the south USA and north Mexico. Its preferred habitat includes lowlands, plateaus, plains, valleys, agricultural land rolling hills of grass land, ranches, and the desert edges.


                Climate zones

                Habits and Lifestyle

                The Ferruginous hawk hunts during the day. It favors a solitary lifestyle, pairing up only during the breeding season. They generally build nests on cliffs and in isolated trees. Their nests make use of wide variety of structures, including utility structures, abandoned farm machinery, farm buildings, artificial platforms and haystacks. Each day they hunt and patrol their territory. Ferruginous hawks make a 'kaah-kaah' call when communicating with other hawks. They line their large stick nests with shredded bark, grass or dried cow dung. The hawk often rests on the ground but is wary of humans and is secretive.

                Diet and Nutrition

                Ferruginous hawks are carnivorous, eating ground squirrels, mice jackrabbits, birds, amphibians and reptiles. Sometimes they will eat meadowlarks, snakes, lizards, grasshoppers, and crickets.

                Mating Habits

                MATING BEHAVIOR
                INCUBATION PERIOD
                35 days
                INDEPENDENT AGE
                40-50 days
                FEMALE NAME
                MALE NAME
                BABY NAME
                BABY CARRYING
                4 eggs

                Ferruginous hawks are monogamous, keeping the same mate for their entire life. Males and females are seen together only during the breeding season, between March and June. Having chosen a suitable place for their nest, males bring in the building material, while females do most of the construction. They copulate during the nest-building period and the female will lay up to 4 eggs with two days between laying. The parents work in shifts, spending equal amounts of time in incubating the eggs. After up to 35 days, the eggs hatch and the nestlings depend for the next 40-50 days on their parent until they are fully developed. They are able to breed at two years old.


                Population threats

                Their major threat is human occupation, as this leads to loss of nesting sites. Their main breeding habitat is constantly disturbed by farmers, who will occasionally take their chickens. This disrupts breeding patterns and the size of clutches. When several pairs are nesting close to each other, this causes constant conflict.

                Population number

                No recent estimate of population size is available for Ferruginous hawk. IUCN lists them as Least Concern (LC), their population flourishing over a huge range of North America. Indeed, the population has increased over the last 40 years by 155%. In 1984, the population estimate for North America was between 3,000 and 4,000 pairs, and in 1987, it was 14,000 individuals.

                Ecological niche

                Ferruginous hawks help to control the rodent population.

                Fun Facts for Kids

                • Hawks have excellent eyesight, 8 times better than human eyesight. They can locate prey from 100 feet away.
                • Hawks can see different colors.
                • During hunting, hawks will dive at 150 miles per hour. They are can catch a prey in the air as well as on the ground.
                • Some species of hawks can migrate, traveling over a thousand mile from nesting areas to feeding areas.
                • A breathtaking dance in the air occurs before mating, the male performing a series of acrobatics that can go on for 10 minutes.


                1. Ferruginous Hawk Wikipedia article - https://en.wikipedia.org/wiki/Ferruginous_hawk
                2. Ferruginous Hawk on The IUCN Red List site - http://www.iucnredlist.org/details/22695970/0

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