Marking birds with color <e1>bands</e1> and a U.S. Fish and Wildlife Service uniquely numbered metal band enables <e2>researchers</e2> to follow individuals from year to year.
Marking birds with color
Marking birds with color bands and a U.S. Fish and Wildlife Service uniquely numbered metal band enables researchers to follow individuals from year to year.
<triplet> bands <subject> researchers <object> Instrument-Agency(e1,e2)