British robin's eggs are smooth but they do not have a glossy surface. They are usually white or pale blue with reddish spots. Size is approximately 20 mm by 15 mm.
British robin's eggs are either a non glossy white or pale blue with red spots. They are incubated by the female and are 20 mm by 15 mm. Robin eggs are incubated by the female and are blue it takes two weeks to inclubate. This is done in two clutches per year with 3-4 eggs.