THE GREATEST GUIDE TO SWAN EGGS HATCHING TIME

could it be feasible the eggs is going to be fertile? could it be regular for that eggs to become varying shades of green? I am aware I am able to look this up in the textbooks, but how long right up until they hatch? like that, the hatchlings will (in basic principle!) all arise from their eggs at the exact same time. That way, the mom and dad wi