The falcons and caracaras (family Falconidae) are a family of birds belonging to the monotypic order Falconiformes. They are medium-sized diurnal raptors generally found in open woodlands but can be found in most of the globe’s regions and ecosystems except polar regions. Rarely scavengers, these birds are capable hunters on the wing and feed on small birds, mammals and other animals. They have been venerated since Ancient Egypt. Long-term uncontrolled use of wild birds for falconry and persecution from farmers have promoted conservation issues for some species, with two species becoming extinct in recent times and others being currenly threatened.
The family comprises 63 extant species in 10 genera, generally classified in three subfamilies. The forest falcons (subfamily) includes genera Herpetotheres (1 species) and Micrastur (7 species), which are distributed along Neotropical woodlands.
The caracaras (subfamily Polyborinae) includes genera Spiziapteryx (1 species), Caracara (1 species), Ibycter (1 species) and Daptrius (7 species). This group is mainly distributed in montane and forested areas of the Neotropics, with one species reaching the southern Nearctic.
The true falcons (subfamily Falconinae) includes the genus Polihierax (1 species) from the Afrotropical realm, genera Microhierax (5 species) — commonly known as falconets — and Neohierax (1 species) from the Indomalayan realm and the cosmopolitan genus Falco (38 species), which includes several migratory species.
Collared falconet
Microhierax caerulescens
Inhabitant of forests from the Himalayas to Indochina. Fairly uncommon and small, with the size of a sparrow. It is a social species that is often best seen in family groups on dead branches on top of the canopy, as I have seen them in Vietnam.
Black-thighed falconet
Microhierax fringillarius
Found in lowland and foothill forests of the Malay Peninsula, Sumatra and Borneo. As other falconets, it is a small-sized uncommon raptor which often forages in small groups. I have observed this species in Peninsular Malaysia.
Lesser kestrel
Falco naumanni
Long-distance migrant that breeds early in the season in croplands and steppe of the Mediterranean basin east to Mongolia and spends the winter in southern Africa. It usually hovers for insects in grasslands in large parties and nests in colonies on human-made buildings. This species became once extinct in Alicante, but an ongoing reintroduction project helped it recently re-establish as a regular breeder in a few locations.
Malagasy kestrel
Falco newtoni
Endemic to Madagascar and Aldabra Islands, where it is an abundant and widespread inhabitant of all kinds of habitats, including urban areas. Each island has its own, distinct form. The species features two morphs: one with rufous underparts and one with white. I have observed this species in Madagascar.
Common kestrel
Falco tinnunculus
Widespread and abundant all across the Palearctic, where it is found in a variety of habitats. Best known for its ability to hover in the air to stalk on preys, as it is typical of kestrels. Migratory in part of its range, albeit there are resident, endemic forms to the Macaronesian archipelagos. This species is an abundant resident in Alicante and a summer visitor in Helsinki.
Merlin
Falco columbarius
Breeding in the northern Nearctic and Western Palearctic, migrating south to northern South America in the New World and the Mediterranean Basin, Caspian Sea and eastern China in the Old World. Small, energetic and strong, it feeds on small birds in a variety of habitats. Localized wintering species in wetlands and croplands of Alicante. I have also seen this species on its breeding grounds in Lapland.
Gray kestrel
Falco ardosiaceus
Found in savanna and open woodland of eastern and western Africa. Apparently tends to favor areas with palm trees. Full gray suit, with yellow bill base, eye rings and legs. I have seen this species in Kenya.
Eleonora’s falcon
Falco eleonorae
The falcon of the seas. Breeds late in few small offshore Mediterranean and Atlantic islets during with the passerine postnuptial migration and migrates to Madagascar region tropical forests. It has two morphs: one jet black and one light. Uncommon and irregular migrant in Alicante during demographic explosions of beetles and dragonflies. I have best seen this species in its breeding grounds and foraging stakeouts in Castellón.
Eurasian hobby
Falco subbuteo
Long-distance migratory falcon breeding in open forests and croplands of Eurasia and wintering in southern Africa. They favor dragonflies and large insects, which they catch in flight. Uncommon but regular migrant in Alicante and regular summer visitor in the Helsinki region.
Peregrine falcon
Falco peregrinus
Found all across the world except in Antarctica — it has the widest distribution of all birds. Large, powerful raptor using the highest top speed recorded in the animal kingdom to hunt on the wing. Variable in plumage along its wide range. It is a resident and wintering species in Alicante. I have also seen it in Georgia, Borneo and India.