Another example are hummingbirds in a state of torpor. They may look like they’re dead, but actually they are resting to replace the energy. Birds who are stunned because they hit a window or something will come around. Live them alone, what you can do is to make sure that there are no bird predators around.
Also birds carry diseases. There are birds who carry West Nile Virus, other have ticks that carry disease like the Lyme disease. Bird mites can get into humans, although they would not stay they can cause enough misery. Report sick or dead birds to the local authorities who can appropriately address these cases, but avoid handling these birds.
One of the most important ethics is to share the birding code of ethics with beginners. The beginning birder may not be aware of the ethics involved with birding, so it is up to the present birdwatchers to share the knowledge. Sharing your knowledge and what you have learned along the way. You might just make a birding friend or two.
In a nut shell, most of the bird watching code of ethics are common sense. If the environment and everyone you have met with respect, bird watching can be great fun. Without the birds, then there is nothing that you would be able to enjoy.
Birdwatching as a recreational activity can go a long way, and by abiding with the code of ethics then everyone can benefit from this great sport.