Forum > Birds In The News > City-dwelling Blue Tits May Lay Bigger Eggs Because Of What They Eat

Webmaster Posted 03-Oct-2018 09:03
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From Science Daily on 03-Oct-2018 09:03

Blue tit eggs that were laid in urban parkland were 5% larger than eggs laid in a nearby forest, which could be due to differences in the amount of calcium available to birds in urban and forest environments, a study finds.


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