What does the Hummingbird mean to you?
If you research it, what does Hummingbird mean in different cultures? How do people talk about Hummingbird in mythology?
It's easy to see this tiny bird as being something so fragile, beautiful yet ultimately sweet and cartoonish, however, in South America it was seen (with good reason since they fight to the death for mates) as a warrior spirit and only those who had proved themselves to be worthy were allowed to wear it's feathers!
If Hummingbird is coming to you, you can honour this connection by doing all you can to learn about it, not just the stuff on 'your animal totem' web sites but the interesting stuff about its life cycle, how it seems almost dead at night when it's heart rate slows virtually to a stop, how in the morning it seems to rise from the dead, the transformation and rebirth concept associated with this etc etc. It takes time and effort.
If you wish to invite Hummingbird into your life, you could find some pictures on the internet, print them out or start keeping a journal and put them in there. Write down everything you find out, start putting the puzzle pieces together and see what message Hummingbird has for you. Where does this research lead you? What coincidences start to come up in your life, will you follow them too? What FEELS right?
See where the trail of breadcrumbs leads you.
Have a wonderful time.