"Song thrushes (<i><a href="//commons.wikimedia.org/wiki/Turdus_philomelos" title="Turdus philomelos">Turdus philomelos</a></i>) usually find an anvil to break <a href="//commons.wikimedia.org/wiki/Snail" class="mw-redirect" title="Snail">snail</a> shells on. Watch this little one use compacted gravel for the same purpose."
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