https://dxnest.com/yen-tinh-che-loai-cao-cap-100g/
https://dxnest.com/yen-tinh-che-loai-cao-cap-50g/
Chickadees are the most popular backyard bird to encourage with a nest box. They are cavity nesters and they prefer woodlands, woodlots and yards with mature trees that provide branches for their winter roosting sites. They also will nest in birch, aspen and alder trees. Because chickadees will often take over the nest of another species (such as bluebirds or tree swallows), putting up a couple of nest boxes helps to promote peace between native cavity nesters. However, if you are