SIRS,--Mr. R. L. Brown, in his interesting notes on the Kingfisher (antea, p. 83), reports a pair of birds having a clutch several days incubated when they had at the same time a brood in an adjacent nest. The experience especially interested me because two cases of the kind have come within m y own observations. The first was in Egypt of a Pallid Shrike (Lanius excubitor elegans) having a clutch ...

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