Earlier this week, as my husband and I sat on the deck, I noticed a wasp hanging out on our hummingbird feeder. Our growing flock of hummers haven’t hesitated to divebomb other, much large birds, for sampling nectar, but on look at that tiny wasp sent them running for cover.
Why? — Because wasp and bee venom can kill a hummingbird.
Don’t let their diminutive size fool you. Hummingbirds can be very aggressive and have been known to attack much larger birds. They are also extremely territorial and will guard their food sources fiercely.
Even so, hummingbirds have many predators that would be happy to make them a meal. More than half of all hummingbirds die within the first year of life. The average life span is about 4 years but it varies by location and species.
Here’s a short list of predators:
Domestic cat
Hawks
Wasps
Blue jay
Snakes
Bees
Praying mantis
Large spiders
This hummingbird has more than regular predators to worry about.
alkaplan 
I have seen hummingbirds get territorial! Kind of fun to see!
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