A new study has found that the climate crisis is causing major disruptions to European birds, from shifting their nesting dates to decreasing their chick numbers to even changing their general body sizes.

The study, published in the Proceedings of the National Academy of Sciences, found that rising temperatures and non-temperature effects of climate change are transforming European birds, such as garden warblers, chiffchaffs, and crested tits.

The authors focused on data collected on 60 species in Britain since the mid-1960s, reviewing changes in egg-laying, body form, and number of offspring. From there, researchers determined what impacts were caused by higher temperatures and what other factors played a role in these transformations.

More than half, about 57%, of the effects were linked to increasing temperatures, but other factors, like habitat loss, pollution, invasive species, and diseases, also contributed. About 32% of the 60 species studied experienced body changes related […]