Do Hummingbirds Get Fat?

Your Bird Feeder

This is a good article about hummingbirds:

One of the charms with hummingbirds is the opportunity to see them closely and often. If you feed them, you have probably noticed that populations boom in late summer. Successful broods are part of the reason. Mother hummingbirds usually lay two eggs, sometimes one, rarely three. Though only half of the youngsters survive the first year, most of those losses occur during the migration south.

Can you make your hummingbirds fat? It's actually helpful