dr. jennifer lavers, she's devoted her life to studying the plight of seabirds. shearwaters are incredible birds. they migrate thousands of miles, stopping only here to breed. lavers: yeah, the stomach is very, very full, and if we look here, there's some very dark pieces, some very light white pieces. and if you see, you know, as i push on this, it's absolutely rigid, completely, completely full of plastic all the way up. leeson: ugh, look at that. lavers: absolutely no doubt that this bird died as a result of that plastic. that is literally a gut full of pstic. i's quite alarming, isn't it? leeson: oh, it's awful. lavers: range of plastic types and colors. we've got everything from the blues and the reds to-- leeson: his stomach's just filled with it. big pieces, too. lavers: big, sharp pieces. leeson: oh, wow, look at the size of that big, black piece. lavers: that is an enormous piece of plastic. leeson: unbelievable. look at the size of that. jen, i counted 234 pieces of plastic out of that one bird. is that a record? lavers: not even close, unfortunately. s