Despite the astronomical spring not yet beginning, the bird spring has already arrived in Estonia as stated by ornithologist Tarvo Valker from the Estonian Ornithological Society. He noted that the first migratory birds reached the country by the end of February, signaling the onset of spring in the natural world. Specific bird species, such as the skylark and the lapwing, play a crucial role in indicating the start of the spring season, as their songs and presence mark the arrival of these seasonal changes.

Valker also explained that birds arriving early in the season often take significant risks as weather conditions can change quickly, which may lead to some of the prematurely arrived birds perishing due to adverse weather. However, it is not uncommon for these birds to temporarily fly south again during bad weather. The rush to migrate serves a distinct purpose: to secure the best nesting spots before competition increases as more birds arrive, highlighting the ecological dynamics at play during their migration periods.

The study of bird migration in Estonia has been ongoing for nearly a century, reflecting a long-term commitment to understanding avian behaviors and their responses to changing environmental conditions, particularly in light of climate change and its effects on migratory patterns. This insight into how warmer winters are influencing arrival times could have broader implications for biodiversity and ecosystem health in the region.