Robin
- The European robin has a contrasting orange spot on its chest that stands out against the rest of its plumage. Males and females are similarly colored.
- Many pairs of European robins in the northern part of their range nest twice during the summer. Parents feed their chicks in the nest for 12–15 days and for another week after they fledge.
Age
European robins typically live from one to three years, although the maximum recorded lifespan is twelve years and the theoretical lifespan extends from fourteen years and two months to twenty years and two months. The species reaches sexual maturity between nine months and one week and one year and three months. During the "Embryo" stage, the embryo develops inside an egg, receiving nourishment from the yolk and remaining still. The "Nestling" stage follows, where the young bird remains in the nest and is fed insects by its parents, growing rapidly and developing feathers; this stage lasts from one week and six days to two weeks and two days. Subsequently, the species enters the "Rapid Growth Post-Fledging" stage, a young bird that has left the nest and learns to fly and forage independently, lacking the characteristic red breast. This period lasts from one to nine months. The "Adult" stage begins after this, lasting from ten months to six years and ten months, during which the adult bird can reproduce, sings songs, defends its territory, and lives alone or in pairs.
Phenotype
Downy feathers initially cover the body of the young robin. The edges of the young’s mouth are brightly yellow, signaling to parents that it wants to eat. After rapid growth, the species' chest is brown with small light spots, and its plumage is mottled, aiding in camouflage from predators; the red color appears after the first molt. An adult European robin has a thin and sharp beak suitable for catching insects and worms, and its legs are thin with sharp claws that help it jump on the ground and cling to branches. The adult’s chest and face are brightly orange-red, a color that helps individuals recognize each other and deter rival males. Short, rounded wings allow the species to fly quickly between bushes.
Physiology
European robins measure from 12 to 14.5 centimeters in body length, with a height of body from 12 to 3.6 meters and a wingspan of 21 centimeters; the species' mass ranges from 15.1 to 18.2 grams. The embryo stage has a body length from 1.9 to 2.1 centimeters and a body mass from 1.8 to 2.2 grams, while the nestling stage exhibits a body mass from 3 to 16 grams and a body length from 5 to 10 centimeters. During the rapid growth phase, the young have a body mass from 14 to 20 grams and a body length from 12 to 14 centimeters. Adult European robins weigh from 15 to 23 grams and have a body length from 12.5 to 14.5 centimeters.
Habitat
European robins inhabit land areas including terrestrial forests, terrestrial meadows and steppes, and elevations up to 1.5 kilometers above sea level. The species occupies temperate mixed forests with warm summers and many oaks, birches, and maples, flooded meadows where water frequently covers the ground and there is abundant grass, and taiga characterized by cold winters and numerous coniferous trees such as spruce and pine. The climate is consistently very wet with frequent rain and high humidity; it can also feature cool summers with snow in winter, warm summers with plentiful rain, warm winters that are not extremely cold, or comfortable summers with temperatures between 20 and 25 degrees Celsius.
Shelter
European robins inhabit bushes, ground areas, niches in walls, or tree cavities. The species constructs or utilizes a nest for laying eggs and raising young. Nests are made of moss, grass, and feathers.
Geography
European robins inhabit the Palearctic biogeographical region and are found within several distinct ecosystems, including Celtic broadleaf forests, broadleaf forests of Western Europe, coniferous forests of the Qilian Mountains, Balkan mixed forests, Baltic mixed forests, and coniferous and mixed forests of the Pyrenees.
Feeding
European robins primarily consume insects and worms, and during winter they switch to berries and seeds as food. The species obtains its food by hopping on the ground, bending over, and catching prey with its beak. Their diet includes insects, spiders, worms, berries, beetles, flies, Hymenoptera, butterflies, amphipods, ribbon worms, snails, nematodes, aphids, hemiptera, dragonflies, and mayflies. The strategy for obtaining food is active hunting and searching for it. Daily food intake ranges from 8 grams to 18 grams.
Reproduction
The European robin’s embryo develops for 1 week and 1 day; the female has broods of 4 to 7 young. The species reaches maturity from 10 months to 1 year, and the male defends a territory while singing to attract a female, with the pair constructing a nest together. The female lays eggs, and both parents feed the chicks. The reproductive interval is from 9 months and 1 week to 1 year and 2 months; the female has 4 to 7 broods.