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The Chestnut-collared Swift
, Streptoprocne rutila
, is a resident breeding bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
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south to Peru
Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....
Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...
. It was one of the species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
controversially moved to Streptoprocne
by the AOU
The American Ornithologists' Union is an ornithological organization in the USA. Unlike the National Audubon Society, its members are primarily professional ornithologists rather than amateur birders...
The swifts are a family, Apodidae, of highly aerial birds. They are superficially similar to swallows, but are actually not closely related to passerine species at all; swifts are in the separate order Apodiformes, which they share with hummingbirds...
is a medium-sized species, 12.7-13.5 cm long, with a longish tail, and weighing 20 g. The male is blackish with a rufous collar. In females and immatures the rufous collar is incomplete or absent. Young birds also differ from the females in that they have reddish edges to the crown feathers. The Chestnut-collared Swift has a chattering chit-chit-chit
Chestnut-collared Swifts feed in flight on flying insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...
s, especially flying ant
Ants are social insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the mid-Cretaceous period between 110 and 130 million years ago and diversified after the rise of flowering plants. More than...
s, often at a greater height than other swifts. Although breeding occurs at all levels where there are suitable sites, this species usually feeds over hill forests or more open woodland at 500 m or more.
The Chestnut-collared Swift builds a nest of mud and plant material on a vertical surface in a damp shady location near water, such as in a cave, under a bridge, or in a culvert. The nest is shaped like a flattened cone, and the two white eggs are incubated by both sexes for 23 days, with a further 40 days to fledging. The young are fed on foodballs made from the collected prey.
The following subspecies are currently recognized:
- Streptoprocne rutila brunnitorques (Lafresnaye, 1844)
- Streptoprocne rutila griseifrons (Nelson, 1900)
- Streptoprocne rutila rutila (Vieillot, 1817)