A BLUE T I T (ParUS C. obscurus) had possession of one of my nesting boxes in Hampshire and laid an egg on each of four successive days. The next day, May 8th, no egg was laid, but another appeared on the 9th. I should say that I numbered each egg the day it was laid. On May 10th I found, to my surprise, three new eggs, two belonging to the Blue Tit and another decidedly larger. The n t h saw ano...

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