Common Chiffchaff (Phylloscopus collybita)

Common Chiffchaff (Phylloscopus collybita) in motion on a reed

Common Chiffchaff (Phylloscopus collybita), agility in motion.

Small in size but immense in vitality, the Common Chiffchaff lives up to its name, tirelessly enlivening wetlands and forest edges.

Nicknamed the “money counter” because of its rhythmic song resembling the clinking of coins, this tiny insectivore is a true bundle of energy. Its olive-green and brown plumage provides discreet camouflage, but its restless temperament often betrays it. A partial migrator, it is capable of traveling impressive distances.

The Abyssinian Wolf, Watcher of the Ethiopian Highlands

Ethiopian Wolf (Canis simensis) on the Ethiopian highlands

The Ethiopian Wolf, guardian of the Abyssinian highlands.

Standing alone on the Abyssinian highlands, the Ethiopian wolf scans the horizon, a fragile witness to a unique high-altitude ecosystem.

This slender predator, perfectly adapted to the vast alpine spaces, is now one of the most endangered mammals on the African continent. Suffering from habitat fragmentation and diseases transmitted by domestic dogs, only about 500 individuals are thought to remain in the wild. Its reddish silhouette against the moorlands embodies the wild and precarious beauty of the Bale and Simien Mountains, where every individual is vital to the survival of this endemic species.

Bioluminescence of Krill Rising to the Surface at Nightfall (likely Euphausia sibogae) – Arabian Sea, Oman

Bioluminescence of Krill surfacing at nightfall, (likely Euphausia sibogae) - Arabian Sea, Oman

Bioluminescence of Krill surfacing at nightfall, (likely Euphausia sibogae) – Arabian Sea, Oman.

At nightfall, krill rise from the depths to the surface, driven by the planet’s largest daily animal migration.

There, tossed by the waves, it releases a cold, bluish light. Its bioluminescence, emitted by small organs called photophores, creates fleeting flashes on the water’s surface. This shimmering sometimes transforms the nocturnal ocean into a sea of living stars, shifting and silent.

Mobulas Rays (Mobula tarapacana), Sea Devils or Gentle Giants? – Azores, Portugal

Mobula rays (Mobula tarapacana), Sea devils or gentle giants? - Azores, Portugal

Mobula rays (Mobula tarapacana), Sea devils or gentle giants? – Azores, Portugal.

Mobula rays, cousins of the majestic manta rays, have long been nicknamed “sea devils” by fishermen around the world.

Their impressive silhouette, their two horn-shaped cephalic fins, the stinger at the base of their dorsal fin, and especially their spectacular habit of leaping out of the water, have fueled many fears and legends. Among the most whimsical tales, it was said that mobulas could grab boat anchors with their curled horns to drag vessels into the abyss. Though harmless to humans, they were also accused of trapping pearl divers or freedivers under their immense “cloak” to drown them. These beliefs, born of ignorance and seafaring imagination, contrast today with the fascination inspired by their elegance, their quiet power, and their essential role in the balance of marine ecosystems.

Eurasian ermine (Mustela erminea) – France

Stoat (Mustela erminea) in its natural habitat - France

The Stoat (Mustela erminea), an agile sentinel of the French mountains.

Lively and bold, this small carnivore is a master of camouflage and survival in rugged landscapes.

Famous for its coat that changes color with the seasons, the stoat trades its brown summer dress for immaculate white fur in winter, keeping only the deep black tip of its tail. This photograph captures the curious and alert expression of this mustelid, capable of slipping into the smallest crevices to track its prey. Despite its small size and elegant appearance, the stoat is a formidable and tireless predator, symbolizing the vital force that animates the mountainous and hedgerow environments of our regions.

Male Mountain Nyala (Tragelaphus buxtoni) – Bale Mountains, Ethiopia

Male

Male Mountain Nyala (Tragelaphus buxtoni) – Bale Mountains, Ethiopia

 

Shy and elusive, the mountain nyala lives only on the Ethiopian highlands, among misty heather forests, alpine meadows, and shadowy clearings. Fewer than 4,000 individuals remain in the wild, most of them confined to the Bale Mountains — the species’ last stronghold.

Males are especially striking: larger and darker than females, they bear long, spiraled horns and a dark crest along their back that stands erect during tension or display. These features make them elegant, ghost-like figures of the high-altitude forests — rare, silent, and hard to glimpse.

Pack of Abyssinian Wolves on Patrol in the Bale Mountains (Canis simensis), Ethiopia


Pack of Abyssinian Wolves on Patrol in the Bale Mountains (Canis simensis), Ethiopia

Pack of Abyssinian Wolves on Patrol in the Bale Mountains (Canis simensis), Ethiopia


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Abyssinian wolves feed almost exclusively on rodents. Their habitat is limited to the high plateaus and mountains of Ethiopia, where rodent density is particularly high. In the Bale Mountains, where this photo was taken, up to 6,000 rodents can be found per square kilometer.

This diet has shaped their behavior: unlike other wolf species that hunt large prey in packs, Abyssinian wolves hunt alone.
Yet each morning, before spreading out to search for food, clan members carry out a joint patrol across their territory.

On this particular day, six wolves from the Meguiti clan were roaming their land, ensuring no intruders had trespassed.

Ornate Ghost Pipefish (Solenostomus paradoxus) – Indonesia

Ornate

Ornate Ghost Pipefish (Solenostomus paradoxus) – Indonesia

 

Strange and delicate, Solenostomus paradoxus defies the eye. This harlequin ghost pipefish, a master of camouflage, blends perfectly among gorgonian branches or seagrass beds, mimicking the shapes and colors of its surroundings. Hanging head-down, it seems to vanish into the background, eluding predators with ease. Its spectacular mimicry makes it one of the most fascinating illusionists of tropical reefs.

Pair of White-throated Dipper (Cinclus cinclus) – Spain

Pair

Pair of White-throated Dipper (Cinclus cinclus) – Spain

 

A small bird of fast-flowing rivers, the white-throated dipper fascinates with its aquatic lifestyle. Able to walk underwater against the current, it hunts aquatic insects, larvae, and small crustaceans along the stream bed. In this discreet dweller of cool waters, the bond between mates is strengthened through food exchanges: the male sometimes feeds the female — a gesture that seals their union before nesting begins.

Japan: A Monkey with a Surprising Habit

Snow monkeys (in Japanese, nihonzaru 日本猿), also known as Japanese macaques (Macaca fuscata), are the only species of primate living in the wild in Japan. This species is also endemic to the Japanese archipelago. These monkeys are mainly found in mountainous regions, at altitudes ranging from 500 to 2,500 meters. In winter, when temperatures become harsh, these monkeys have developed a surprising habit: soaking in natural hot springs to keep warm!

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