A recent study by University College Dublin and Spain's Instituto de Investigación en Recursos Cinegéticos (IREC) suggests that hunting is not the primary cause of declining bird populations across Europe. The research analyzed trends in the populations of 256 bird species across nine European countries, including Ireland and the United Kingdom, over a 20-year period. Scientists examined factors such as legal hunting status, conservation protections, nesting habits, agricultural practices, and farming intensity to determine their impact on population changes. The study, published in the journal Global Ecology and Conservation, found no statistically significant link between whether a bird species could be legally hunted and its likelihood of population decline. Researchers categorized species in Spain, France, Hungary, Ireland, the Netherlands, Poland, Portugal, Sweden, and the UK as either declining or stable. They evaluated whether legal hunting rights were connected to population trends, while also considering other environmental and policy-related factors. The analysis showed that national-level data on hunting legality did not strongly correlate with population declines. In a second part of the study, scientists looked at the average number of birds harvested annually in six countries as a measure of hunting pressure. Again, they found no significant relationship between the level of hunting and population decline. Instead, the study identified other factors that influenced population trends. Birds protected under the EU Birds Directive—specifically those listed in Annex I—were less likely to decline. Additionally, ground-nesting birds faced a higher risk of population decline compared to those nesting in trees or other elevated areas. The researchers emphasized that national-level measures of hunting legality and harvest levels do not fully reflect local variations in hunting intensity, habitat quality, or conservation efforts. Legal hunting status only indicates whether hunting is allowed, not how many birds are actually hunted or where the hunting occurs. These factors can differ widely between species and countries. The study also highlighted that bird populations already struggling with issues like habitat loss or low reproduction rates may be more sensitive to additional pressures. The researchers concluded that more detailed data on hunting practices, bird demographics, and local population trends are needed to determine when and where hunting might influence bird populations.