The presence of animals in Cologne is generally restricted to insects, compact rodents, and a number of other species of birds. Pigeons are the most frequently witnessed animals in Cologne, Whilst the amount of birds is augmented every year by a growing populace of feral exotics, most visibly parrots such as the rose-ringed parakeet.Base notes: The

As Element of the demilitarisation in the Rhineland, town's fortifications needed to be dismantled. This was a possibility to make two inexperienced belts (Grüngürtel) throughout the city by changing the fortifications and their fields of hearth into huge general public parks. This wasn't concluded till 1933. In 1919 the University of Cologne