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		jmelo11 13 days ago \| parent \| context \| favorite \| on: EuroBirdPortal – Live bird movements across Europe Why the number of birds decreases and then increases? Is it because migration or due to non-observable previous times?
		help

bcraven 13 days ago | [–]

This is a visualisation of Europe.

Some birds migrate outside Europe.

hackersnooze1 13 days ago | [–]

birds migrate

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