It is a simile because your comparing two things
<span />
Answer:
Hope it will helps:)
Explanation:
Glance.gaze,watch,see,observe,pay attention to,view,regard,note,check out
When migrating, birds usually migrate when there's not enough food, shorting of daylight, and when it's getting colder in winter. Birds that migrate do so in the late summer through the fall and in the late winter through the spring. Birds and use a radical pair-based compass to "see" the Earth's magnetic field when migrating.
This is the correct form, though you need to be specific and describe who "them" is.