New Year's Eve is not a nice time for birds or other animals in Berlin.
They lose their secure places, as today people occupy nearly every green area to fire their fireworks. The birds are then forced to fly higher in the sky than usual. They thereby loose much energy, what is, especially in cold winters, very dangerous to them. The stress hinders them to find time to sleep or to search nourishment.
Public professional fireworks in a few public spaces should be enough. The trouble with private fireworks is also that they last longer every year and they happen sporadically, continuous noise is not so heavy for the animals, as they can get used to it. Sporadical noise makes them freak out, like not only dog owners surely would admit.
Therefore, we ask you to avoid fireworks in your yards and parks in your city and area.
The birds and many others would thank you for that!