DO BUT­TER­FLIES MAKE RE­TURN JOUR­NEYS?

BBC Wildlife Magazine - - Our Wild World -

But­ter­fly life­spans are short, so in­di­vid­u­als rarely mi­grate all the way ‘there and back’. In­stead, but­ter­fly mi­gra­tions com­prise a se­ries of steps, each un­der­taken by a dif­fer­ent gen­er­a­tion. Six or more suc­ces­sive gen­er­a­tions of painted lady but­ter­flies ( above), each com­plet­ing a sin­gle leg of the jour­ney be­fore stop­ping to breed, pro­duce the 12,000km round trip from cen­tral Africa to north­ern Europe and back each year.

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