When picking up bird feathers, it's important to take precautions to avoid harming the birds or spreading diseases. Firstly, it's best to use gloves or a plastic bag to pick up the feathers to prevent direct skin contact. This helps to reduce the risk of transmitting any potential diseases or parasites that may be present on the feathers. Additionally, it's important to avoid disturbing nesting areas or habitats while collecting feathers, as this can disrupt the natural behavior of the birds and their environment. Overall, it's important to approach feather collection with respect for the birds and their surroundings, and to take care to minimize any potential negative impact on their well-being.