Birds of prey or predatory birds, also known as
raptors, are hypercarnivorous bird species that
actively hunt and feed on other vertebrates (mainly mammals, reptiles
and other smaller birds). In addition to speed and strength, these
predators have keen eyesight for detecting prey from a distance or
during flight, strong feet with sharp talons for grasping or killing
prey, and powerful, curved beaks for tearing off flesh. Although
predatory birds primarily hunt live prey, many species (such as fish
eagles, vultures and condors) also scavenge and eat carrion.
From
Wikipedia
Raptors migrate for food sources, just like your favorite songbirds.
In the fall they head south, where more food is available; in the
spring they head back north
to their breeding grounds. You donât have to live in a certain area to
see these raptors, either. Theyâre everywhere! Broad-winged raptors
like hawks and eagles use warm air currents rising from the ground,
called thermals, and updrafts off ridges to aid in migration. Both
thermals and updrafts allow the birds to soar on the wind and minimize
flapping, which conserves energy. Often these raptors engage in a
behavior called kettling: slowly riding thermals high into the sky,
swirling in a circular pattern to stay within the column of rising
air. Falcons have narrower wings that make them less able to take
advantage of currents, so they flap more. Sharp-shinned hawks,
Cooperâs hawks and harriers use a combination of soaring and flapping.
From
Birds&Blooms
Every year, from late summer to mid-autumn, Migratory Raptor birds
arrive in Iran from northern latitudes, and some of them enter the
central parts of the country after passing through the mountainous
regions of Kepe Dagh, Alborz, and Talash. In limited
areas of this route (Eurasia-Africa corridors), located in parts of
the northern provinces of Iran country, we see migration bottlenecks.
These migratory bottlenecks are mainly located in areas of Hyrcanian
forests adjacent to high altitudes and in places close to the sea. The
existence of Hyrcanian forests as a refuge and resting place for these
birds, as well as a source of food for continued migration, is
undeniable. For the same reason, the name of this project is tied to
the Hyrcanian forests in order to indicate the location of the project
and the effect of this world heritage in protecting the population of
Raptor birds.
From
Iranian Birding Club website
Why do we monitor raptor migration? For one, these sites are excellent
places for visitors to learn about natural history, biology, and
identification of raptors from our trained crew. The sites are also
unique in that visitors have an opportunity to see a hawk up close and
personal, which can be the thrill of a lifetime or the spark that
ignites a lifelong passion for raptors! Another reason is to maintain
a long-term database of hawk count totals to be analyzed periodically
for population trends of the birds that migrate past each specific
site. The item most helpful in facilitating a day of hawk watching is
a pair of binoculars. Binoculars are not always necessary, but are
extremely helpful most days. They are considered the "tool of the
trade". And it never hurts to have some clouds (a.k.a. a hawk
watcher's "happy little helpers") in the sky for picking out
high-flying birds. However, with or without clouds, it is a good idea
to bring along sunscreen, a hat, sunglasses, food & water, and warm
clothes on the colder days. You can also search for the nearest Raptor
watch project to volunteer to help.
From
Hawk Watch Website
Hover the cursor on the speaker button to hear what they sound. (might take a while to load)
A large eagle with rich brown plumage, wide wings, and seven well-splayed âfingersâ at the wingtip. Adults are entirely dark brown; juveniles and immatures at rest show a distinctive wide white band bordered with black on the wing. In flight, this transforms into a white traverse band on the underwing that forms the base of the primary and secondary feathers. Birds take about four years to attain adult plumage. Frequents open grasslands, deserts, scrub, wetlands, and mountains, and is a regular carcass feeder along with vultures.
Very large; dark-brown body of adult contrasts with pale head and nape. Similar to Golden Eagle but with a shorter tail and white shoulders that can be hard to spot. The underwings are dark with low contrast. Immatures are strikingly different, sandy brown with prominent streaks and a pale rump contrasting with the dark tail and dark flight feathers. Breeds in forested areas intermixed with steppes and agricultural areas, where often seen perched on pylons. Winters in open habitats, including cropland.
Medium-sized, compact eagle. Adults are conspicuously two toned when perched: dark flight feathers contrast with paler body. Head and bill small for an eagle. Juveniles quite different, with bold white bars on the back, wings, and pale uppertail. Smaller and paler than the similar Greater Spotted Eagle. Look for the diagnostic double (not single) white "commas" on the wrist of the underwing. Normally found in open woodland or forest edges but can be found around low intensity farmland areas, sometimes perching prominently.
Adults are large and quite uniform dark brown eagles with very broad wings and short tails. Single white "comma" mark at the wrist of the underwing. Similar to the Lesser Spotted Eagle, which is smaller, paler, and more contrasting. Juveniles are more boldly patterned with numerous prominent dirty white spots on the back and upper wings. More tied to forests than Lesser Spotted Eagle, but still near rivers and bogs. Frequents humanmade habitats more often in winter, such as lakes, rubbish dumps, and reservoirs.
A medium-sized buzzard-like raptor but still unmistakably eagle-shaped, with long fingered primary flight feathers, a long square-shaped tail, and feathered legs (boots) prominent when perched. Two color morphs: pale morphs are distinctively two-toned and contrasting, whereas dark birds can be confused with Black Kites and Marsh Harriers. Look for distinctive pale "landing lights" on the shoulders when viewed head-on. Found in forested country with open patches, often in hilly areas where it frequently soars with wings slightly pushed forward.
Massive raptor with rather long, heavy bill; broad, plank-like wings; and relatively short, graduated tail. Looks like a flying barn door and soars with wings rather level (not slightly raised like Golden Eagle). Plumage dark overall. Adult has paler brown head and body, white tail, yellowish bill. Immature starts with mostly brown tail streaked white, blackish bill; attains fully white tail in about 4 years. Generally uncommon, mainly found along seacoasts and larger rivers (feeds predominantly on fish).
Large, slightly ungainly raptor with long and very broad wings, a shortish tail, and a conspicuously big head. Pale belly and underwings contrast with the darker head in most adults, but juveniles have pale heads. All age groups have a tendency to look a bit disheveled. On perched birds look for the owl-like face and unfeathered legs. Hunts over open areas, spending lots of time hovering with rowing wingbeats into the wind.
Odd-looking, pale, medium-sized vulture with a bare, solemn-looking yellow face. The bill is narrow with a black tip. In flight, the deep-fingered black flight feathers contrasting with white inner feathers may recall White Stork, but the tail is wedge shaped. Juveniles are dirty brown with bare gray faces. An inhabitant of open or semiopen areas, nesting on cliffs and less frequently in trees. Scavenges at rubbish dumps in addition to carcasses, but sadly is in decline over much of its wide range.
Massive tricolored vulture with whitish head and neck, pale brown body, and contrasting dark flight feathers. Juveniles similar but with a pale brown rather than white neck ruff. Nests in colonies on cliff ledges; often seen in loose flocks soaring over valleys and mountainsides but always in search of updrafts and thermals. Still the commonest vulture over much of its breeding range. Some populations are resident while others are highly migratory.
Medium-sized harrier, flies with wings held in a V-shape, low over open fields and marshes, listening for rodents lurking below. Distinctive foraging behavior and conspicuous white patch on rump in all plumages. Five long primary âfinger tipsâ prominent in flight. Females and immatures are warm brown with streaky breasts. Adult male has plain mid-gray wings with black wingtips and paler belly.
Gangly raptor with long wings and tail; local in marshes and wetlands with extensive reed beds. Mainly seen in flight, quartering fairly low over marshes, with wings raised in shallow V. Commonest plumage dark brown overall with variable creamy cap, throat, and narrow leading edge to wing. Brightest adult males have tricolored upperwings, grayish tail, pale head and breast contrasting with rusty-brown belly. Extremely similar to closely related Eastern Marsh-Harrier; males of that species are darker-headed and browner-chested, and females are warmer brown and streakier on the chest, without Eurasian's discrete white 'cap' and dark line through the eye.
Commonest large hawk in many areas, often seen soaring. Favors woodland and forest edge, farmland with hedges; locally in towns with larger trees and wooded parks. Also hunts over open country, especially moorland and rough grassland. Mainly seen as singles or pairs, circling over fields and woodlands with wings slightly raised. Rather stocky hawk with broad wings and fairly short, square-tipped tail (rounded when spread). Plumage variable but typically has paler breast band, fine dark tail barring (broad dark tail tip on adult).
A large, long-winged buzzard which may recall a small eagle in size. Variable plumage with three color morphs. All have obvious dark carpal patches at the wrist of the wing. Juveniles lack the adultâs prominent black trailing edge to the wings. Often hunts from a prominent perch, or sits on the ground and scans for prey. A species of open steppe and desert country, sometimes in more wooded areas but always near big open spaces. Compare with similar Common and Upland Buzzards, as well as Rough-legged Hawk; note long-winged structure, size, and wings held in âVâ in soaring flight.
Fairly small, long-tailed hawk with broad, rounded wings (not pointed like kestrels). Soars occasionally, but more often seen in quick hunting flight chasing small birds, or perched quietly in shade. Note golden-yellow eyes, barred underparts (barring grayish on female, rusty on male). Juvenile brownish above through first year. Smaller and much less bulky than Northern Goshawk, and with horizontally barred instead of vertically striped underparts. Occurs in woodland, forest, farmland, and urban areas with hedges and wooded patches; sometimes hunts in gardens.
Powerfully-built forest-dwelling hawk, uncommon across much of range. Adults are distinctive if seen well: overall gray, paler below, blackish crown and cheek, white eyebrow, and red eye. Immature very similar to Eurasian Sparrowhawk and Cooper's Hawk, but larger and broader-winged with a more prominent white eyebrow, heavier streaking below (Eurasian Sparrowhawk barred below), and typically streaked undertail coverts. In most suburban areas, Cooper's and Sparrowhawk are more likely; goshawk typically requires extensive mature forest. Very aggressive around the nest. Feeds on large prey such as hares and grouse.
Small falcon with distinctive male plumage: gray head, rusty back, gray tail with broad black tip. Female is brownish above, with barring on the back, wings, and tail. Note rather pointed wingtips (unlike rounded wings of Accipiter hawks), and distinct dark spotting on the breast. Inhabits open and lightly wooded country, farmlands, grasslands, and heathlands; often seen over grassy areas beside roads and at airports. Perches on wires and posts, and typically hunts by hovering, at times fairly high overhead. Very similar to Lesser Kestrel.
Streamlined long-winged falcon. Note gray upperparts with plain tail, boldly streaked underparts with rusty leggings and vent. Swift-like; flight more graceful and aerodynamic than Eurasian Kestrel. Compare with larger, stockier, shorter-tailed Peregrine Falcon. Favors open woodland, heathland, and farmland with stands of trees; often hunts over nearby water bodies and marshes. Hunts in the air, catching dragonflies, swallows, and other birds, which it sometimes eats on the wing.
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