Whatever form of banding or marking is used, researchers are careful that birds do not experience irritation or anything that might affect their behavior, physiology, longevity, social life, ecology, or survival prospects.
थंड प्रदेशांमध्ये, कड्यांवर बर्फ जमू शकतो आणि यामुळे विशेषतः पाण्यात राहणाऱ्‍या पक्ष्यांना इजा होऊ शकते.