SWANS EGGS INCUBATION TIME NO FURTHER A MYSTERY

could it be attainable the eggs is going to be fertile? could it be usual for that eggs to be different shades of green? I know I'm able to seem this up during the guides, but just how long right until they hatch? you can find now huge feral populations of Mute swans in many states, and these non native birds are destroying the habitat of indigen