The Callaeas wilsoni, commonly known as the North Island Kōkako, is an endemic bird of New Zealand. It is easily recognizable by its bluish-grey plumage and bright blue facial wattles. This forest bird is known for its melodious and complex song, often compared to a flute. It primarily inhabits the wet and dense forests of the North Island, where it feeds on fruits, insects, and leaves. Although its flight is weak, it is an excellent climber, using its strong legs to move between branches. Unfortunately, the North Island Kōkako is threatened by habitat loss and predation by introduced species, leading to a significant decline in its population.

The pygmy nuthatch (Sitta pygmaea) is a small forest passerine, measuring 9–11 cm in length and weighing 8–12 g, identified by its slate-blue dorsal plumage, brighter blue crown, and contrasting white throat. Endemic to western North America’s ponderosa and Jeffrey pine forests, it forages for insects, seeds, and resin in bark crevices. Highly social, it forms stable family groups year-round and often clings upside-down on trunks and branches. The breeding season runs from 01.04–30.06; it nests in cavities, laying 5–9 eggs incubated for 14–17 days, with hatchlings emerging between 15.04 and 17.07.

The Eurasian nuthatch is a small woodland bird found primarily in mixed and deciduous forests across Europe and Asia. It is easily recognized by its blue-grey and orange plumage, light belly, and distinctive black mask around its eyes. This bird is particularly known for its ability to climb upside down on tree trunks, allowing it to reach areas inaccessible to other birds. It primarily feeds on insects, seeds, and nuts.

The Common Redpoll, Acanthis flammea, is a small finch in the Fringillidae family. It is easily identified by its brown streaked plumage and bright red cap. Males often have a rosy breast, while females are duller. This small bird is well adapted to cold climates and is primarily found in boreal forests and arctic regions. It mainly feeds on seeds but also consumes insects in summer. The Common Redpoll is a gregarious bird, often seen in flocks, especially in winter. It is known for its irregular migrations, influenced by food availability.

The Olive-backed Sunbird, or Nectarinia jugularis, is a small, vibrant bird found primarily in Southeast Asia and Australia. Males display a bright yellow throat and olive back, while females are more subdued in color. Known for their slender, curved beaks, these birds primarily feed on nectar but also consume insects to supplement their diet. They are often seen in gardens, tropical forests, and mangroves, playing a crucial role in flower pollination. Their song is a mix of high-pitched, melodious chirps, often heard at dawn.

The Regal Sunbird, Cinnyris regius, is a small African hummingbird-like bird known for its vibrant colors. The male displays a dazzling plumage with shades of metallic green, blue, and red, while the female is more subdued with brown and green tones. This nectarivore is commonly found in tropical and subtropical forests, feeding primarily on nectar, but also on insects and spiders. Its slender, curved beak is perfectly adapted to reach the nectar of flowers. The Regal Sunbird is an active and agile bird, often seen flitting from flower to flower, playing a crucial role in the pollination of plants in its habitat.

The Eurasian Spoonbill is a medium-sized bird primarily found in wetlands across Europe, Asia, and North Africa. It measures about 80 to 95 cm in length, with a wingspan of 120 to 130 cm, and weighs between 1.5 and 2.5 kg. Its plumage is predominantly white, with a long spoon-shaped bill that allows it to forage in shallow waters, primarily feeding on aquatic invertebrates, small fish, and crustaceans. The Eurasian Spoonbill is often seen in groups, feeding in marshes, rice fields, or estuaries. It is migratory, moving to warmer regions during the winter. While its population remains stable in certain areas, the Eurasian Spoonbill faces threats related to habitat loss, water pollution, and urbanization.

The African Spoonbill, or Platalea alba, is a striking wading bird known for its spoon-shaped bill, which it uses to sift through water for food. It boasts a bright white plumage that contrasts with its reddish legs and bill. This bird is primarily found in the wetlands of sub-Saharan Africa, frequenting marshes, lakes, and rivers. The African Spoonbill is a gregarious bird, often seen in groups, and feeds mainly on small fish, crustaceans, and aquatic insects. Its breeding season varies by region but is generally tied to the rainy season when food resources are plentiful.

The Roseate Spoonbill is a large wading bird with striking pink plumage, measuring between 71 and 86 cm in length and a wingspan of 120 to 135 cm. Its long, spatula-shaped bill is used to sweep shallow waters side to side in search of prey. Adults have a greenish bare head, white neck and back, and vivid pink wings with carmine highlights. Juveniles are paler, with a feathered head and lighter pink plumage. This species feeds primarily on small fish, crustaceans, and aquatic insects, captured by filtering mud in wetlands. It inhabits coastal marshes, mangroves, lagoons, and estuaries from the southern United States to South America. Although listed as Least Concern by the IUCN, the Roseate Spoonbill remains vulnerable to habitat degradation, particularly due to pollution and loss of wetlands.

The Double-collared Seedeater is a small passerine bird belonging to the Thraupidae family. It is primarily found in South America, particularly in Brazil, Argentina, Paraguay, and Uruguay. Its plumage is generally gray with lighter shades on the belly and a darker cap. Males and females exhibit sexual dimorphism, with males often displaying brighter colors. This bird inhabits various environments, from open forests to agricultural areas and urban gardens. It primarily feeds on seeds but can also consume insects. The Double-collared Seedeater is known for its melodious song and its ability to adapt to different environments.

The Arctic Tern is a migratory bird species primarily found in coastal regions of the Arctic during the summer, and in tropical and subtropical areas during the winter. It measures about 35 to 40 cm in length, with a wingspan of 80 to 100 cm, and weighs between 90 and 130 g. Its plumage is mostly white with gray tones on the back and wings, and its head is black with a distinctive black band around the eyes. The Arctic Tern is famous for its impressive migrations, traveling thousands of kilometers between its breeding sites in the Arctic and its wintering grounds in Africa, Southeast Asia, and Australia. It primarily feeds on fish and marine invertebrates, which it catches by diving into the water. While its population remains stable, the Arctic Tern is threatened by habitat loss, human disturbances, and climate change.

The Sandwich Tern, Sterna sandvicensis, is an elegant seabird known for its white plumage, black cap, and black bill with a yellow tip. It inhabits European and African coasts, nesting in colonies on beaches, islands, and lagoons. It primarily feeds on fish, which it catches by skillfully diving. As a migratory bird, it travels long distances between breeding sites and wintering grounds. The Sandwich Tern is an indicator of coastal ecosystem health, and its conservation is vital in the face of threats like pollution and human disturbance.

The common tern is an elegant seabird easily recognized by its white plumage, light gray back, and bright red beak. It is primarily found along the coasts of Europe, Asia, and North Africa, often near estuaries and rivers. This bird is an excellent fisher, diving with precision into the water to catch fish. The common tern is also known for its swift and graceful flights.

The Royal Tern, or Thalasseus maximus, is an elegant seabird known for its large size and striking white plumage, contrasted by a black cap on its head. Its bright orange bill and long, slender wings give it a majestic appearance in flight. It primarily inhabits Atlantic coasts and estuaries, feeding on fish caught with precision diving. Sociable by nature, it nests in dense colonies on sandy islets or isolated beaches. Although its conservation status is currently "least concern," it remains sensitive to human disturbances and habitat degradation.

The Ruddy Shelduck, or Tadorna ferruginea, is a medium-sized waterfowl known for its striking orange-brown plumage and pale head. Males and females look similar, though males have a black neck ring during the breeding season. This bird favors open habitats near freshwater, such as lakes and rivers. It is primarily herbivorous, feeding on aquatic plants, but may also eat insects and small invertebrates. The Ruddy Shelduck is a partial migrant, moving southward in winter. It is often seen in pairs or small groups and is known for its distinctive, melodious call.

The Common Shelduck is a large duck with a distinctive plumage, measuring between 58 and 67 cm in length. It is identified by its glossy greenish-black head, white body with a broad chestnut band, and bright red bill. Males have a prominent knob at the base of the bill, which females lack. This species inhabits estuaries, lagoons, salt marshes, tidal mudflats, and shallow lake shores, often in flocks. It nests in burrows or cavities, sometimes dug into dunes or embankments. The shelduck primarily feeds on aquatic invertebrates such as mollusks, worms, and crustaceans, filtered from the mud. While generally secure, it is vulnerable to coastal wetland destruction.

The Purple Swamphen, or Porphyrio porphyrio, is a striking waterbird known for its vivid blue-purple plumage and bright red bill. It primarily inhabits marshes, lakes, and wetlands with dense vegetation. This bird is recognized for its graceful walk and swimming ability. The Purple Swamphen is omnivorous, feeding on aquatic plants, insects, and small animals. It is often seen walking on water lilies thanks to its long toes. Although generally discreet, it can be noisy, emitting loud and varied calls. Its presence is an indicator of healthy aquatic ecosystems.

The Bishop Tanager is a small, colorful bird found primarily in the tropical forests and wooded areas of Central and South America, notably in Costa Rica, Panama, Colombia, and Venezuela. It typically measures about 18 cm in length and weighs between 20 and 30 g. Its plumage is especially vibrant, with shades of green, yellow, and red, giving it a striking appearance, which is why it is named as such. The Bishop Tanager is frugivorous, primarily feeding on fruits, berries, and seeds, but it can also eat insects. This bird is known for its social behaviors, living in small groups or pairs, and is often observed moving through trees in search of food. While its population remains stable, it is sometimes threatened by deforestation and the loss of its natural habitat.

The whinchat is a small passerine bird found primarily in meadows, cultivated fields, and open areas across Europe and Asia. It is easily recognized by its brown and beige plumage, orange chest, and white markings on its head. This small bird primarily feeds on insects, which it catches by flying or by perching to observe its surroundings. The whinchat is also known for its territorial behavior and distinctive song.

The European Stonechat, Saxicola torquata, is a small passerine bird belonging to the Muscicapidae family. It is easily identifiable by its distinctive plumage: the male has a black head, white throat, and orange-brown back, while the female is duller with brownish tones. This bird is often seen perched on bushes or fences, watching for insects to feed on. It inhabits open areas such as meadows, heaths, and agricultural lands. The European Stonechat is a resident bird in temperate regions, but some populations migrate south in winter. It is known for its melodious song and short, sharp calls.

The Eurasian siskin is a small passerine of 11–12 cm with yellow-green plumage streaked with black and dark wings. It inhabits coniferous and mixed woodlands, especially alder and birch stands, feeding mainly on cone seeds and small herbaceous seeds. During breeding, pairs nest in mid-canopy conifers and raise 2–3 broods per year.

The Western Capercaillie, or Lyre Grouse, is a large bird primarily found in the coniferous forests and wooded areas of Eastern and Northern Europe, notably in Scandinavia, Russia, and Poland. It typically measures about 40 to 50 cm in length and weighs between 500 and 800 g. Its plumage is mainly brown and black, with white markings and red hues on the chest. The Lyre Grouse is particularly famous for the spectacular courtship dance of the male, who spreads his feathers in a lyre shape to attract a female. It primarily inhabits dense forest habitats and feeds on berries, seeds, young shoots, and insects. While its population remains relatively stable in some areas, the Lyre Grouse is threatened by habitat loss, deforestation, and human disturbances.

The Wallcreeper is a small bird found primarily in rocky cliffs and mountains of Europe, notably in the Alps, the Pyrenees, and the Carpathians. It typically measures about 14 to 16 cm in length and weighs between 12 and 20 g. Its plumage is characterized by distinct patterns of white, gray, and black, with very prominent white markings on its wings. The Wallcreeper is an excellent climber, capable of moving on almost vertical rock faces thanks to its strong claws. It primarily feeds on insects, small arachnids, and larvae that it finds in rock crevices. Although it is a relatively rare bird, the Wallcreeper is threatened by the disturbance of its rocky habitats, particularly due to urbanization and the exploitation of natural resources.

The Baglafecht Weaver is a medium-sized bird, measuring about 15 cm in length. It is easily recognizable by its bright yellow plumage, contrasting with a black head and brownish wings. Both males and females have similar colors, though males are generally more vibrant. This bird primarily feeds on seeds but also consumes insects, especially during the breeding season. It is found in various habitats, including forests, savannas, and agricultural areas. The Baglafecht Weaver is known for its complex nests, often hanging from tree branches. It is social and often lives in colonies, making it fascinating to observe.

The Eurasian Wryneck is a small bird of the woodpecker family, primarily found in open forests and clearings across Europe, especially in France, Spain, Italy, and Russia. It typically measures about 22 cm in length and weighs between 50 and 60 g. Its plumage is mainly brown, with dark spot-like patterns on the back and wings, and a light-colored throat. The Eurasian Wryneck feeds primarily on ants and other insects that it finds on tree trunks or branches. It is often observed pecking at tree bark in search of food. While its population is generally stable, the Eurasian Wryneck is sometimes threatened by habitat loss due to deforestation and changes in agriculture.

The Toco Toucan, scientifically known as Ramphastos toco, is a striking bird native to the tropical forests of South America. Easily identifiable by its large, vibrant red bill, it measures about 55 to 65 cm in length. Its plumage is predominantly black with a white throat, and its eyes are encircled by a blue ring. Despite its size, the bill is lightweight due to its hollow structure, aiding in the capture of fruits, insects, and occasionally small reptiles. The Toco Toucan is an adept climber and uses its wings for short flights between trees. It lives in small groups and communicates through harsh calls, playing a crucial role in seed dispersal.

The Keel-billed Toucan is a large, colorful bird found primarily in the tropical forests of Central America, notably in Costa Rica, Guatemala, Honduras, and Mexico. It typically measures about 50 cm in length and weighs between 400 and 500 g. Its plumage is mainly black, with a bright yellow chest and face, and it is easily recognizable by its large, colorful bill, which is primarily orange with shades of red and yellow. The Keel-billed Toucan primarily feeds on fruits, berries, and nuts, but can also consume insects and small reptiles. It generally lives in social groups and is an excellent climber, spending much of its time in trees. While its population remains relatively stable, the Keel-billed Toucan is sometimes threatened by habitat loss due to deforestation.

The Pteroglossus torquatus, known as the collared aracari, is a vibrant bird belonging to the Ramphastidae family. It is characterized by its striking plumage, predominantly black body, bright yellow chest, and distinctive red collar. Its long, curved beak is essential for feeding on fruits, insects, and occasionally small vertebrates. This toucan primarily inhabits the tropical rainforests of Central America, from southern Mexico to Panama. It is often seen in small groups, moving nimbly through the canopy. Although relatively common in its natural habitat, deforestation poses an increasing threat to its populations.

The Yellow-throated Toucan is a colorful bird found primarily in the tropical forests of Central America, notably in Costa Rica, Panama, Nicaragua, and Honduras. It typically measures about 50 cm in length and weighs between 400 and 600 g. Its plumage is mainly black, with a bright yellow throat and chest, and it has a wide, colorful bill, typically yellow with touches of red and orange. The Yellow-throated Toucan is primarily frugivorous, feeding on fruits, berries, and nuts, but it can also consume insects and small vertebrates. It generally lives in small social groups and is an excellent climber, spending much of its time in trees. While it remains relatively stable in certain areas, it is sometimes threatened by deforestation and habitat loss.

The toco toucan is the largest toucan species (55–65 cm long), with black plumage and a white throat topped by a large bright orange bill. It inhabits tropical humid forests and woodland savannas in South America, feeding on fruits, insects, and small vertebrates. During the breeding season (February to June), it nests in tree cavities and pairs perform aerial display flights.