Birds Opening vs Grandmasters

Please donate https://www.paypal.com/cgi-bin/webscr... buy books/dvds below Great book to learn the Birds opening here http://amzn.to/2DwJ8Na dvd nimzo-larsen attack b3 http://amzn.to/2FBj8gY dvd chessbase on birds http://amzn.to/2DRHKBH Birds Opening is popular at club level.Probably because of its straightforward plan,attacking theme and simplicity. At GM level it is a different story; where it is more of a surprise weapon used in blitz. I believe it is because black can equalize with little effort. What do you think of this opening? #birdsopening #nimzolarsenopening