forelimbs of birds are modified. why? give reason. Share with your friends Share 12 Krishnakoli Datta answered this Forelimbs of birds are modified into wings that help them to fly. These wings exert a downward force that helps the birds to lift up. 47 View Full Answer Vyshnav Veenus answered this Hi,Forelimbs of birds are modified into wings so that it can help them inflight . 7 Saloni Tomar answered this HI,FORELIMBS OF BIRDS ARE MODIFIED INTO WINGS SO THAT THEY CAN FLY EASILY. -3