Snakes, unlike birds and flying insects, have a difficult time migrating to islands.
(Snakes, unlike birds and flying insects; have; a difficult time migrating to islands) Context(Snakes , unlike birds and flying insects have,List([0, 45))):(Snakes, unlike birds; flying; insects)
Snakes , unlike birds and flying insects have,List([0, 45))
Snakes, unlike birds and flying insects Snakes, unlike birds
have flying
a difficult time migrating to islands
insects