Common Kingfisher (Alcedo atthis) lives in river bank and stream across Europe, Asia, and North Africa. It feeds on fish and insects. Its conservation status is Least Concern.
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A real field recording of the Common Kingfisher, made in the wild.
At just 16 cm long and weighing only 34-46 g, the common kingfisher is the size of a sparrow. Its tiny body lets it perch just 1-2 m above a stream and plunge straight down, grabbing fish no deeper than 25 cm below the surface. This compact design lets the bird consume up to 60 % of its body weight each day.
A kingfisher's territory can stretch up to 3.5 km of riverbank, a strip it fiercely defends to secure enough fish for its high-energy diet. Because the bird must eat around 60 % of its body weight daily.
Kingfisher nests are hidden burrows up to 90 cm long, ending in a chamber where the pair lays 2-10 glossy white eggs that each weigh about 4.3 g. The tiny eggs hatch after 19-20 days, and the altricial chicks stay in the burrow for another 24-25 days, showing how a single, well-protected tunnel underpins the entire breeding cycle.
Kingfishers can see underwater thanks to two retinal foveae and a special lens that shifts focus, letting them judge prey distance despite refraction. This visual adaptation lets the bird reliably catch fish up to 12.5 cm long, making it a top predator in clear streams and a sensitive indicator of water clarity.
Only a quarter of the young survive to breed the following year, but this is enough to maintain the population. Likewise, only a quarter of adult birds survive from one breeding season to the next. The oldest bird on record was 21 years.
Sources
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As the Common Kingfisher darts over the tranquil waters, its iridescent feathers glimmering like a shard of fallen sky, it embodies the very essence of swift and silent predation, its piercing gaze scanning the depths below for the slightest flicker of movement. With a swift, arrow-like dive, it plunges into the river's depths, emerging victorious with a glittering fish clutched tightly in its beak, a testament to its remarkable agility and hunting prowess. In its fleeting, turquoise-hued presence, we are reminded of the beauty and wonder that lies just beneath the surface of our everyday world.
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