The sanctuary of the "Stadttaubenprojekt" on the edge of Frankfurt. About 3000 injured or sick pigeons are delivered here or picked up and brought here every year by employees. In the sanctuary the pigeons are treated and fed. Some become healthy and are free to chose if they stay here or fly away, others are hosted in the sanctuary and from then on most of their eggs will be exchanged with dummies. Many pigeons will be euthanized because they are too malnurished, too sick or were too heavily injured in nets, spikes, by accident or intention and by other animals like crows and rats.