As spring approaches, the early morning hours are filled with the chirping and singing of birds searching for partners. Although the temperatures remain low, many birds are displaying what the German Nature Conservation Association (NABU) refers to as 'spring feelings' as they gear up for mating season, which starts for some species as early as February. According to NABU's bird protection expert, Martin Rümmler, while the peak mating season typically runs from March to May, some species, such as owls, begin their courtship even earlier. Notably, the tawny owl is identified as an early flirter, having started its mating calls in January, emitting distinctive 'kollernde' sounds to attract potential partners to its territory.

The courtship is crucial for establishing lasting pair bonds, with females often opting for a mate for life based on the males' displays of territory and fitness. Once a female selects her mate, she typically lays between two to six eggs around early to mid-March, with the incubation period lasting about four weeks until the chicks hatch. Currently, great tits and blue tits are notably vocal in the mornings, especially during favorable weather conditions, contributing to the vibrant chorus of bird life signaling the onset of mating season in the avian world.