Albatross seabird bird birds 11. Bird flight is one of the most complex forms of locomotion in the animal kingdom. Each facet of this type of motion including hovering taking off and landing involves many complex movements. The sheer scale of global plastic production means that no species is beyond its reaches and if we allow things to continue as they are the situation is only going to get worse. So much plastic trash is flowing into the oceans that 90 percent of seabirds eat it now and virtually every one will be consuming it by 2050.