Swallow's eggs can be a variety of colors. Often an off white with black/brown spots. But they can be pure white, eggshell blue or pink. Sometimes these colors are spotted other times not.
Purple and white
well if you have a barn swallow egg get a nest with feathers and put it in the sun make shore nothing gets to it.
An egg? Though not to snakes who swallow them whole.
it is a white like a chickens egg. I amansweringthis question because i have a sparrow egg of my own.
About 15 days.
The answer is, the colour and the pattern of the egg and the shape.
The walls were painted an egg yellow.
White
brown
BLUE
White
A platypus's egg is a pale, cream or creamy-grey colour.