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Global warming_a final proof_hummingbirds spotted at Czech Karst near Karlstein

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     Global warming_a final proof_hummingbirds spotted at Czech Karst near Karlstein This is the final proof to stop the  endless discussion about global warming.   The  hummingbirds that are without any doubt a  typical representative of birds with domicile in  tropical or subtropical countries on the other side of the globe have been spotted and photographed in central part of Czech republic.   This place near the castle Karlstein is known as the Czech Karst and it is also a place with temperatures well above the rest of the country.   This factor plus its proximity to the Prague's airport could lead to a possible explanation of this breaking news.   The world -wide known Czech ornithodologist  Karel Hauptvogel is  rock-solid sure:  "  The hummingbirds are merciless invaders of new territories.  In last few thousands of years they extended their habitat located  originally in central  America to a vast territory ranging  from southern Alaska to Tierra del Fuego.   Even the