How climate change is affecting snow bunting breeding ecology and the welfare implications for this Arctic specialist.
Snow bunting welfare at Arctic breeding grounds illustrates the precision of evolutionary timing relationships that climate change disrupts. As extreme Arctic specialists, snow buntings time their arrival to match the brief window of invertebrate abundance that follows spring thaw. When thaw timing shifts due to warming, or when invertebrate emergence timing decouples from bunting arrival, breeding pairs may find inadequate food for raising chicks successfully. The welfare consequence is chick starvation from insufficient food delivery during the critical growth period. This phenological mismatch — affecting many Arctic species — is difficult to address directly and requires climate action as the primary intervention.