The flag of Chile, adopted on 18 October 1817, features two horizontal bands of equal height in white and red, with a blue square in the canton of the same height as the white band. The blue square contains a centered white five-pointed star, and the flag has a 3:2 ratio. It belongs to the stars and stripes flag family.Referred to as La Estrella Solitaria (The Lone Star) in Spanish, the flag's design holds symbolic significance. The star represents Venus and holds cultural importance for the indigenous Mapuches, serving as a symbol of guidance towards progress and honor. Alternatively, some interpretations suggest it signifies an independent state. The color blue symbolizes the sky and the Pacific Ocean, white represents the snow-covered Andes, and red symbolizes the bloodshed in the pursuit of independence.The flag's colors are said to have roots in the flag flown by the Mapuche during the Arauco War, as mentioned in the epic poem La Araucana. "Flag Day" is observed on the ninth of July annually, commemorating the 77 soldiers who lost their lives in the 1882 Battle of La Concepción.The design of the current Chilean flag is commonly credited to Bernardo O'Higgins.

The design of the Chilean flag, attributed to Minister of War José Ignacio Zenteno and possibly created by Spanish soldier Antonio Arcos or Gregorio de Andía y Varela, was officially established on 18 October 1817 through a decree. However, only indirect references to the original decree exist, and the flag was officially presented during the Pledge of Independence ceremony on 12 February 1818, carried by Tomás Guido. The original flag adhered to the Golden Ratio in the proportions between the widths of the white and blue sections and various elements in the blue canton. In this design, the star in the rectangular canton did not stand upright in the center; instead, the upper point was slightly inclined toward the pole, creating a golden proportion with the canton's length. The National Coat of Arms, carried over from the previous Flag of the Transition and adopted in 1817, was also featured in the center.

The adoption of the star configuration traced its origins to the star used by the Mapuches. According to O'Higgins, the star on the flag was the Star of Arauco. In Mapuche iconography, the morning star or Venus (Wünelfe in Mapudungun or Guñelve in Hispanicized form) was initially represented as an octagram star or a foliated cross. However, the ultimately chosen star had five points, with the guñelve design reflected as an asterisk in the center, symbolizing the blend of European and indigenous traditions. The initial complex designs faced challenges in flag construction, leading to the disappearance of the embroidered seal and the eight-pointed asterisk. The star, however, was retained in an upright position. In 1854, the proportion of the flag was adjusted based on its colors, resulting in a square canton and a hoist-to-fly ratio of 2:3. Finally, in 1912, the diameter of the star was defined, and the order of colors in the presidential flag and decorative cockade was specified as blue, white, and red from top to bottom or left to right for the viewer.

Limited records exist of the original Chilean flag design, with the most significant being that of the flag used in the Declaration of Independence. This particular flag had a width of two meters and a length just over two feet. Historically, the flag was safeguarded by various hereditary institutions until it was stolen in 1980 by members of the Revolutionary Left Movement as a protest against the military dictatorship. In late 2003, this group returned the stolen specimen to the National Historical Museum, where it is currently housed.A popular legend in Chile suggests that this third version of the Chilean flag won a contest for the "Most Beautiful National Flag in the World." According to the most common version of the legend, this victory occurred in 1907 in Blankenberge, Belgium, on the coast of the Baltic Sea [sic]. However, various versions of the story exist, claiming different time periods, placements relative to the French flag, and even discussions about the ranking of Chile's national anthem compared to La Marseillaise. Notably, the only documented version of this story contains basic inaccuracies, such as mistakenly placing Blankenberge on the Baltic Sea instead of the North Sea, casting doubt on its historical accuracy.

Endemic Animals of Chile

The south Andean deer (Hippocamelus bisulcus), also known as the southern guemal, south Andean huemul, southern huemul, or Chilean huemul or güemul, is an endangered deer species native to the mountains of Argentina and Chile, and is the national animal of Chile. Found in the high mountainsides and cold valleys of the Andes, it is one of the two mid-sized deer in the Hippocamelus genus, alongside the northern guemal or taruca. The distribution, habitat, behavior, and diet of the deer have been extensively studied, and the conservation of the remaining population is a significant concern. Adapted to challenging, rugged terrain, the south Andean deer has a stocky build and short legs. Its brown to greyish-brown coat transitions to white undersides and a marked white throat, with long, curled hairs providing insulation against cold and moisture. Female deer weigh 154-176 lbs and stand 31 in, while males weigh 198 lbs and stand 35 in. Fawns are born unspotted, and there is no sexual size difference among them.

Sexual dimorphism is evident, with only males having antlers, shed annually toward the end of winter. Males also possess a distinctive black "face mask" that forms an elongated heart shape around a brown forehead. Despite being a dimorphic ungulate, research indicates that south Andean deer form mixed-sex groups, with the duration of inter-mixing increasing with group size. Larger groups are observed farther from rocky slopes, suggesting lower predation rates on slopes and higher rates in open areas like valley bottoms.Male reproductive behavior is observed from March to May, coinciding with the period of most copulations. The gestation period is six months, and calves are born in November and December, growing rapidly. The breeding season lasts for four months, during which males stay near females to prevent other males from approaching. Calves are born measuring 16in to 20 in, with a slightly darker color than their parents. They have long legs relative to their bodies and spend their initial months camouflaged in bushes. Calves start consuming grasses at two months of age.

The Juan Fernández firecrown (Sephanoides fernandensis) is a hummingbird belonging to the "coquettes" in the tribe Lesbiini of the subfamily Lesbiinae. This species is critically endangered and is exclusive to Isla Róbinson Crusoe, part of the Juan Fernández archipelago in Chile. The green-backed firecrown (S. sephaniodes) shares the genus Sephanoides with the Juan Fernández firecrown. There are two recognized subspecies: the extant S. f. fernandensis and the extinct S. f. leyboldi, which was believed to have occurred on Alejandro Selkirk Island, though some doubts about this attribution exist.

The Juan Fernández firecrown exhibits extreme sexual dimorphism, with distinct male and female plumages. In the 19th century, they were initially thought to be separate species until a nest was discovered with both sexes. Males, measuring 4.5 to 4.7 inches in length and weighing about 0.38 ounces, display a predominantly cinnamon-orange plumage with an iridescent fiery reddish-yellow forehead and crown, while the wings are dark coppery gray. Females, about 4.1 inches long and weighing around 0.24 ounces, have bluish-green upperparts, an iridescent bluish-purple crown, pure white underparts with black and green disks, and slaty green wings with blue-green central tail feathers and white outer webs.

The nominate subspecies, S. f. fernandensis, is restricted to Isla Róbinson Crusoe, while the putative extinct subspecies, S. f. leyboldi, is associated with Alejandro Selkirk Island. The species is found in forests, thickets, and gardens, preferring shaded areas. During the summer, males are commonly observed in San Juan Bautista, the island's only town, feeding on the flowers of trees in the Sonchus subgenus Dendroseris, which are endemic and critically endangered. Breeding records occur at elevations between 390 and 2,200 feet, and while the Juan Fernández firecrown moves around the island in search of flowering plants, it is otherwise sedentary.

The Juan Fernández firecrown primarily forages for nectar in the flowers of native plants, with a preference for species like Rhaphithamnus venustus and Sonchus brassicifolius. During autumn and winter, when many native plants are not flowering, it may also feed on introduced species like Eucalyptus and Abutilon. The hummingbird clings to flowers, favoring shaded blossoms positioned above the ground. Both males and females defend foraging territories, with males typically occupying more productive sites. In addition to nectar, the Juan Fernández firecrown supplements its diet with small insects caught in flight or gleaned from leaves.

The breeding season of the Juan Fernández firecrown spans from September to mid-November. The female constructs a small cup nest made of woven fern fibers, other plant fibers, mosses, and spiderwebs. This nest is placed on the tip of a twig in a concealed location, typically around 13 feet above the ground. Research conducted in 2011 found that over 75% of the nests were located in Myrceugenia fernandeziana trees. The clutch size is typically two eggs, but details regarding the incubation period and the time it takes for the chicks to fledge are not currently known.

The Chilean Terrier holds the distinction of being Chile's first recognized dog breed, with its origins tracing back to the late 19th century through the crossbreeding of the Smooth Fox Terrier and the Ratonero Bodeguero Andaluz. Although acknowledged by the Kennel Club of Chile (KCC), the breed has not yet gained recognition from the International Canine Federation (FCI). Since 2011, it has been categorized under Group 3 by Alianz Canine Worldwide (ACW). The history of the Chilean Terrier is intertwined with Chile's development since the 18th century, reflecting the presence of these dogs in the country during colonial times when European immigrants introduced Smooth Fox Terriers to South America to control rats and small rodents. Inherited from its English ancestors, the Chilean Terrier exhibits a spirited temperament and a penchant for barking, while local dogs contributed traits of balance, courage, loyalty, and a strong sense of duty.

Throughout the 18th and 19th centuries, the breed thrived on the estates of south-central Chile, adapting seamlessly to a rustic lifestyle, often residing in stables. This made them cherished companions for both peasants and landlords, cutting across social classes without being associated with a specific caste. With the migration of farmers to cities during the late 19th century and the onset of the Industrial Revolution, the Chilean Terrier readily adapted to urban life, finding new roles in various industries and settlements for rat control. In the early 20th century, as interest in foreign breeds grew among the emerging bourgeoisie and immigrants, the Chilean Terrier faced challenges in gaining recognition. Despite the lack of support from local breeders, it remained a beloved pet in middle-class homes. Its enduring popularity is highlighted in the popular comic strip "Condorito," where Washington, a Chilean Terrier, became a symbol of the breed's loyalty and the embodiment of "the Chilean" spirit.

Today, the Chilean Terrier is found across the entire country and possesses the remarkable ability to adapt to various climates in Chile. It continues to serve as a reliable mouse hunter in rural areas, while also thriving as an excellent companion in urban settings, known for its attentiveness and lively nature.The breed's predominant color is white, complemented by distinctive black and brown markings. A short-haired undercoat is present, occasionally revealing dark spots beneath the white coat. The ears are set high, leaning forward in a "V" shape at the tips. The Chilean Terrier boasts well-developed teeth and a strong bite. In terms of size, males typically stand between 12.6 inches and 15 inches tall at the withers, with the ideal height being around 13.8 inches. Females have a height range of 11 inches to 13.8 inches at the withers, with the preferred height being 12.6 inches. Male weights fall between 11 pounds and 17.6 pounds, with the optimal weight at 14.3 pounds. Females weigh between 8.8 pounds and 15.4 pounds, with the ideal weight set at 12.1 pounds.

The Nibaldo's wood frog, scientifically known as Batrachyla nibaldoi, is a frog species belonging to the family Batrachylidae. Endemic to Chile, it is found in the Los Lagos and Aysén Regions, ranging from Villa O'Higgins in the south to Kent and Melchor Islands in the north. There is a record from Alao Island further north, but it might represent Batrachyla taeniata. The specific name "nibaldoi" is a tribute to Nibaldo Bahamonde, a Chilean marine biologist, in recognition of his significant contributions to the development of zoology in Chile.

Adult female Nibaldo's wood frogs typically measure between 1.4 and 1.6 inches in snout–vent length, while the length of males is not reported. They have a rounded snout in dorsal view and a sloping snout in lateral profile. The tympanum is visible, and the supra-tympanic fold is evident. Their fingers and toes are slender with moderately pointed tips, and while the fingers lack webbing, the toes have thin basal webbing. The dorsal ground color varies from light brown or yellowish brown to grayish, adorned with dark brown spots forming longitudinal lines. A dark canthal band is present, extending behind the eye to the tympanic region, while the ventrum is white.

These frogs inhabit steppe habitats in valleys surrounded by forests of Nothofagus antarctica, Nothofagus betuloides, and Drymis winteri. They are often found under logs, rocks, and in shrub habitats. Males call from lagoons and temporary pools with abundant vegetation. Eggs are laid under rocks and moss, and when rain floods the area, the larvae develop in the water. Despite being locally abundant, including along the Carretera Austral, this species faces potential threats, such as the introduced American mink. Its range includes protected areas, such as Laguna San Rafael National Park.