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In the 1920s Blue Tits learned what was under those shiny new foil milk bottle tops on people's doorsteps in Swaythling, Southampton, Hampshire. It was fresh cream! Tits are gregarious feeders and
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Milk bottles revisited: social learning and individual variation in the blue tit, Cyanistes caeruleus - ScienceDirect
![A British blue tit (Cyanistes caeruleus) about to pierce and feed from a milk bottle Stock Photo - Alamy A British blue tit (Cyanistes caeruleus) about to pierce and feed from a milk bottle Stock Photo - Alamy](https://c8.alamy.com/comp/A2GW95/a-british-blue-tit-cyanistes-caeruleus-about-to-pierce-and-feed-from-A2GW95.jpg)
A British blue tit (Cyanistes caeruleus) about to pierce and feed from a milk bottle Stock Photo - Alamy
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