Europe is a double whammy then for bird populations. The first thing you notice traveling around many european cities is ostensibly there are no spay and neuter

Europe is a double whammy then for bird populations. The first thing you notice traveling around many european cities is ostensibly there are no spay and neuter programs (or they must be totally ineffective) for the thousands of stray cats that clad each and every rooftop and loiter around every park and street. For some places like Istanbul the overabundance is a point of pride or a tourist attraction in its own right. It's hard to imagine there are any birds at all in these cities with the bulk of the calories in the environment seemingly being held at the small game predator level, which is sustained at a higher level than the available prey can even support thanks to stuff like restaurant dumpsters or people feeding the cute little killing machines directly.