The red-footed falcon (Falco vespertinus ), formerly the western red-footed falcon, is a bird of prey. It belongs to the family Falconidae, the falcons. This bird is found in eastern Europe and Asia although its numbers are dwindling rapidly due to habitat loss and hunting. It is migratory, wintering in Africa. It is a regular wanderer to western Europe, and in August 2004 a red-footed falcon was found in North America for the first time on the island of Martha's Vineyard, Massachusetts.
It is a medium-small, long-winged species. The adult male is all blue-grey, except for his red undertail and legs; its underwings are uniformly grey. The female has a grey back and wings, orange head and underparts, and a white face with black eye stripe and moustaches.
Young birds are brown above and buff below with dark streaks, and a face pattern like the female. Red-footed falcons are 28–34 cm (11–13 in) in length with a wingspan of 65–75 cm (26–30 in). The average mass is 155 g (5.5 oz).
The main areas of European distribution are in southern Russia and Ukraine. The species occurs in large numbers in Hungary, Romania and Serbia. Smaller populations exist in Italy, Bulgaria and Moldova, in Austria, Slovakia and in Belarus. The red-footed falcon also breeds irregularly in the Czech Republic and in the Baltic States, occasionally also in Germany. In Asia, the breeding occurrences run in a relatively narrow band somewhat south of the taiga eastwards to the upper Lena, where they touch the range of the sister species Falco amurensis east of the Baikal. The northern border lies between the 63° and 58° north latitude, the south border around 45° north latitude. It runs along the north slope of the Altai and then westward follows the transition of open pine forests into the treeless steppe areas of Central Asia. Further to the west, the breeding areas on the lower reaches of the Volga and on the north coast of the Caspian Sea reach Europe. The southernmost occurrences are in the steppe areas north of the Caucasus and in South Georgia. Some isolated breeding areas are located in northern Turkey. The red-footed falcon winters in southern and eastern Africa.
The red-footed falcon tends to reside in typical steppe type habitats ranging from Eastern Europe to Lake Baikal in Central Asia. This is a diurnal bird of open country with some trees, often near water. They tend to migrate far south for the winter, including in areas of Africa. The red-footed falcon tends not to make their own nests, but tend to use abandoned nests made by other birds such as the hooded crow, rook, and magpie. The nests that are chosen tend to be higher than the majority of the other nests; the nests tend to be 13–20 m (43–66 ft) above the ground and within 3–4 m (9.8–13.1 ft) of the tree top. Most of these nests tend to be near the edge of woods, avoiding nesting on solitary trees. Breeding takes place in these abandoned nests; usually breeding occurs colonially in rookeries because these birds tend to stay together in groups. This is also important because fledging success tends to be higher when these birds are in colonies and are not solitary. The red-footed falcon relies on the nests built by rooks, and with a decline in population of rooks, the number of suitable rookeries for colonial nesting has also decreased, leading humans to ideas of conservation.
The red-footed falcon is a bird of prey with a diet consisting of a variety of insects, amphibians, reptiles, mammals and birds, such as great green bush-crickets, spadefoot toads, sand lizards, the common vole and bird nestlings, respectively. This bird's distinctive method of hunting is shared by the common kestrel. It regularly hovers, searching the ground below, then makes a short steep dive towards the target. When feeding their nestlings, the youngest nestlings receive the most food more frequently and more regularly. Chicks that are between 0 and 3 weeks old will get fed bigger prey like toads, lizards, bird nestlings, and great green bush-crickets, while nestlings over that age will get fed less frequently and with less variety. The diet of young nestlings consists mostly of Orthoptera and beetles with some vertebrates, while the diet of older nestlings mostly consists of Orthoptera and almost never of vertebrates.
This falcon is a colonial breeder, reusing the old nests of corvids, such as rooks. It lays two to four eggs. Its maximum lifespan is 13.25 years in the wild and 18 years in captivity.
A major impact on the red footed falcon's population is loss and degradation of natural nest sites. Rooks and rookeries are regularly attacked, by shooting into the nests, killing birds and cutting down the trees they were living in for the wood. Pesticides are also a huge threat as they are depleting their natural food sources, making food competitive. There is also an increased mortality caused by electrocution due to the bird's habit of sitting perched on power lines. From 1980 to 1999 intensive poisoning of rooks in Hungary forced the species to change its nest site selection habits, and large colonies have nearly disappeared there as a result, with only 38% of the population breeding colonially. As productivity is generally greater in larger colonies, further decreases may occur. The species appears to be hunted opportunistically during migration.
A conservation program, which was funded by the EU's LIFE Nature financial instrument, was initiated on January 1, 2006 with the goal of increasing and maintaining the breeding population of the species in Hungary and western Romania. This conservation project developed a method to create more nesting sites by creating artificial nest box colonies. It's pretty common for the birds to be preyed upon by martens or other mammalian predators during incubation or during the nestling state, even in the artificial colonies. Some extreme cases show that the predators may threaten the existence of every clutch in the colony. They are using many methods to repel or trap potential predators in order to avoid predation. Some of those methods are listed in this section. There are many known threatening factors and the program takes active conservation measures against them. Some of these factors include being electrocuted by electric pylons so the program locates and insulates the exposed cables. Roadside trees are a common nesting site for falcons because they are also home to corvids. Previously, only safety aspects were considered in the management of these nesting facilities. Therefore, the project will submit a conservation based management plan to the correct authorities. One of the reasons of red-footed falcon decline is the collapse of the rook population due to drastic pest control measures. Based on previous experience and information from stakeholders, a draft "corvus management plan" will be prepared to handle the conflict situations caused by rooks.
el or trap potential predators in order to avoid predation. Some of those methods are listed in this section. There are many known threatening factors and the program takes active conservation measures against them. Some of these factors include being electrocuted by electric pylons so the program locates and insulates the exposed cables. Roadside trees are a common nesting site for falcons because they are also home to corvids. Previously, only safety aspects were considered in the management of these nesting facilities. Therefore, the project will submit a conservation based management plan to the correct authorities. One of the reasons of red-footed falcon decline is the collapse of the rook population due to drastic pest control measures. Based on previous experience and information from stakeholders, a draft "corvus management plan" will be prepared to handle the conflict situations caused by rooks.
Future conservation efforts proposed include continuing to conduct regular surveys throughout the area. Figuring out additional ways to help the species is crucial. Red-footed falcons are known to use artificial colonies, therefore, they can be a useful mid-term conservation tool to prevent their population from fragmenting. Also, there may be ways to help out the species by changing farming and land-use practices in Central Europe. Surveys in Bulgaria indicated that there is a decline in available breeding sites for the birds.
