Climate change is already negatively affecting many waterbird species and new Complementary Guidelines on Climate Change Adaptation Measures for Waterbirds – proposed for adoption at AEWA’s 8th Meeting of the Parties in Budapest – provide much needed practical guidance to help resource-constrained countries to understand the impacts of climate change on their waterbird populations and key sites, plan adaptation measures and implement mitigation policies. These new guidelines build on the existing AEWA MOP-approved guidelines (Conservation Guidelines No. 12 - Guidelines on measures needed to help waterbirds to adapt to climate change and Resolution 6.6 - Updated Advice on Climate Change Adaptation Measures for Waterbirds).