Argentina formally named the Argentine Republic, is a nation found generally in the southern portion of South America. Sharing the greater part of the Southern Cone with Chile toward the west, the nation is additionally flanked by Bolivia and Paraguay toward the north, Brazil toward the upper east, Uruguay and the South Atlantic Ocean toward the east, and the Drake Passage toward the south. With a territory region of 2,780,400 km2 (1,073,500 sq mi), Argentina is the eighth-biggest nation on the planet, the fourth biggest in the Americas, and the biggest Spanish-talking country. The sovereign state is subdivided into twenty-three territories and one self-governing city (ciudad autónoma), Buenos Aires, which is the government capital of the country (Spanish: Capital Federal) as chosen by Congress. The regions and the capital have their own constitutions, yet exist under a government framework. Argentina claims sway over piece of Antarctica, the Falkland Islands (Spanish: Islas Malvinas), and South Georgia and the South Sandwich Islands.

Buenos Aires is the capital and biggest city of Argentina. The city is situated on the western shore of the estuary of the Río de la Plata, on the South American landmass' southeastern coast. "Buenos Aires" can be deciphered as "reasonable breezes" or "great pretense", however the previous was the significance planned by the originators in the sixteenth century, by the utilization of the first name "Genuine de Nuestra Señora Santa María del Buen Ayre". The Greater Buenos Aires conurbation, which additionally incorporates a few Buenos Aires Province regions, comprises the fourth-most crowded metropolitan region in the Americas, with a populace of around 14 million. The city of Buenos Aires is neither piece of Buenos Aires Province nor the Province's capital; rather, it is a self-ruling locale. In 1880, following quite a while of political infighting, Buenos Aires was federalized and expelled from Buenos Aires Province. As far as possible were expanded to incorporate the towns of Belgrano and Flores; both are currently neighborhoods of the city. The 1994 protected revision conceded the city self-rule, consequently its formal name: Autonomous City of Buenos Aires.

Erythrina crista-galli, regularly known as the cockspur coral tree, is a blossoming tree in the family Fabaceae, local to Argentina, Uruguay, southern Brazil and Paraguay. It is broadly planted as a road or greenery enclosure tree in different nations, outstandingly in California. It is known by a few normal names inside South America: ceibo, seíbo (Spanish), corticeira (Portuguese) and the more equivocal bucaré, to give some examples. Its particular designation crista-galli signifies "cockerel's brush" in Latin.

The rufous hornero is medium-sized with a square tail and in all respects somewhat decurved bill. The plumage is by and large ruddy dark colored with a dull darker crown and a whitish throat. Genders are similar and adolescent winged animals are somewhat paler beneath (presumably on the grounds that they are more clean). Rufous horneros feed on creepy crawlies and different arthropods acquired by scavenging on the ground while strolling. They now and again feed on scraps, for example, bread pieces. Tunes in the rufous hornero are explicitly unmistakable. The quick trill that is typically heard as a component of the two part harmony is quicker in the male, slower in the female, and both beat their wings at their sides while singing and the wings beat at a similar rate as their trill. In this manner, while viewing an onlooker may recognize the sex by how quick their wings beat while singing.