Lewis's work on plants hitchhiking on birds/ wings featured on BBC and in Science
Birds migrating between the Arctic and South America could be responsible for distributing plants across the tropics, according to new research.
Scientists screened wild shorebirds' feathers before migration and found plant parts embedded.
Birds are known to disperse seeds and small animals across local, regional and continental ranges.
It is the first evidence of plant fragments being carried in the plumage of long-distance migratory birds.