how long does it take for swan eggs to hatch
This is called a 'brood patch'. Different birds sit on their eggs for different lengths of time. Bigger birds lay bigger eggs which take longer to hatch. Blue tits incubate their eggs for two weeks but swans sit on theirs for nearly six weeks!Most birds lay one egg a day until the eggs are all laid. Some birds lay up to 15 eggs but others lay only one.But the parent birds do not start to incubate the eggs until they are all laid.his is called a 'brood patch'. Different birds sit on their eggs for different lengths of time. Bigger birds lay bigger eggs which take longer to hatch. Blue tits incubate their eggs for two weeks but swans sit on theirs for nearly six weeks!