Eggs from 'Catalogue of the collection of birds' eggs in the British museum (Natural history)' by William Robert Ogilvie-Grant. London: Printed by order of the Trustees, 1901-12.

#scientificillustration #naturalhistory #birdseggs #eggart #eggs

She will sit on the eggs for about two weeks until they are ready to hatch. I am a bit concerned she is a bit early. However, I do have a supply of mealworms at the ready to help. #bluetits #birdsnests #ukbirds #birdseggs