Bird-keepers and enthusiasts alike consider the goldfinch, Cardeulis cardeulis, to be the king of the finches. The Cardeulis genus has dozens of species and subspecies which have colonized the entire globe over the course of millions of years. The main populations evolved in South America and Eurasia. They nest from March until July-August depending on the geographical area. Their breeding area consists of clearings with small trees. They usually build their nests on the outermost branches and fairly low down (around 1 meter from the ground), always with east to south-east exposure. Fun fact: they build their nests from animal hairs (sheep, goats, wild boars) and plant matter, though they always finish it off with light-colored materials (floss from poplar trees or pappus from common groundsel and shepherd’s purse are commonly used). They feed their newly hatched chicks with aphids and other small insects and larva. The hatchlings’ diet later becomes almost exclusively plant based with dried seeds and milky buds.