For some insight into the politics of hybrids there is a huge row in the UK over the erdication of Ruddy Ducks (introduced from N. America) which are hybridizin

For some insight into the politics of hybrids there is a huge row in the UK over the erdication of Ruddy Ducks (introduced from N. America) which are hybridizing with the remnant White-headed Duck population in Spain. A lot of the issues are discussed in the following which although presented from one side of the argument do give an idea of how messy this can get: http://uk400clubrarebirdalert.blogspot.com/2009/12/plea-for-non-reporting-of-british-ruddy.html http://uk400clubrarebirdalert.blogspot.com/2009/12/plea-for-... http://uk400clubrarebirdalert.blogspot.com/2009/12/championing-cause-of-ruddy-duck-my.html http://uk400clubrarebirdalert.blogspot.com/2009/12/championi...