. ♪ oh, flacco, the owl ♪ >> reporter: as owls go, flacco was one in a million.e talking hundreds of millions, up to a billion birds every year annually. that's just in the u.s. this is a huge, huge problem. >> red-tailed hawk. >> reporter: really? where is the hawk? >> coming in the last building. >> reporter: ornithologist andrew farnsworth has done the math. >> that's like 30% of the population over 50 years. >> reporter: is there a downstream ripple effect from that? >> yes, they have ecosystem functions and services that they provide, including pest control, pollination, dispersal of seeds. as you lose birds, there definitely are ecosystem structure ramifications. >> reporter: how are these birds so clueless as to fly into glass? >> birds do not perceive it as solid. they fly often full speed, maybe 15, 20, 35 miles per hour. >> reporter: every year, billions of birds migrate. they navigate by the stars. >> so light pollution, because birds are mostly migrating at night, light is incredibly powerful stimulus. it attracts birds. it disorients them. >> reporte

state but we have a few favorite sons and daughters we know vice president is from delaware, joe flacco. played at university of delaware. and mehmet oz a native from delaware. dr. oz is a well respected, in our state, and well beyond his wife lisa is with him here today, we have known each other for quite a long time now, he is a familiar face as america's doctor. vice chair, profess or of surgery the columbia university, and made a career out of educates us on all facets of health, answering tough questions on dr. oz show, three and a half million viewers tune in to watch the show, and authored 7 "new york times" bestsellers, named one of 100 most influential people by "time" magazine, global leader of tomorrow, list goes on. i will say that students in delaware are benefiting from his terrific program. dr. oz is a great doctor. a nationally renowned expert on the issues of health and just incredible guy. let's give it up for dr. oz. [applause] >> thank you, i live in new jersey. i should mention it. >> it's okay. >> my wife is from pennsylvania, i work in new york, i pay taxes everyw