Hummer
Beware!
A bird that weighs less than two
pennies faces a LOT of danger! Here are a few of the hazards that
hummingbirds face:
-
This
hummingbird was trapped in a garage and almost starved to death.
|
Spiders.
One hummer watcher writes, "I watched this walker spider for about
3 weeks, fascinated by its size and beauty. Thank goodness one afternoon
I noticed a big movement in a shrub...a hummer was caught in a web and
the spider was on its way. The hummer tore up the web but couldn't fly.
I grabbed the bird and shooed away the spider and the hummer was hollering
and I pulled off the webs as best I could and I was real surprised how
strong they were...some felt like piano wire!!" How can a spider
manage to eat a hummingbird? First the spider injects the hummer with
a poison to kill the hummer. The toxin liquefies the hummer, and little
by little the spider sucks it in. Using this technique, a large tarantula
can liquefy and suck out a mouse, leaving nothing but a little pile
of fur and bones, in 36 hours flat. And hummingbirds weigh less than
most mice!
- Window
Screens. Janey writes, "I spotted a hummer caught in the screen
door. Her beak got stuck! She freed herself. You know, I'm wondering
about their safety a lot these days. If I feed them to close to the
house, what are the chances that one could hit the window or get stuck
in the screen and die?" Tropical ornithologist Alexander Skutch
had that same problem. He spent a lot of time helping hummers whose
bills had become stuck in his window screens, and when he was away,
he sometimes returned home to hummers who had died from starvation or
stress in his screens. He solved the problem by taking out his window
screens, so hummers often fly right through his house! In Costa Rica,
where he lives, there are a lot more creatures than hummers who can
enter a house through a screenless window, including poisonous snakes
and spiders. But for Skutch that was a minor problem compared to finding
these poor dead hummingbirds.
- Fish
and Frogs. There are many documented cases of fish and frogs snapping
up hummingbirds.
- Drowning.
Tired hummers have dropped into the Gulf of Mexico and other bodies
of water, and strong winds have pushed them into water, where they drown.
- Thistles
and thorns. There are many documented cases of hummers being tangled
in burdock thistle flowers
- Insects.
At least one Ruby-throated Hummingbird was pinned to the ground by a
dragonfly, and there are several records of praying mantises snatching
them at flowers!
- Buildings.
Some hummingbirds crash into windows, and sometimes they find their
way into a building and can't find their way out. To read the true story
of a hummer that got lost in a building and was rescued, see The
Hummer in the Garage.
- Cats.
This is the most preventable danger of all. Cats are fascinated by the
quick movements of hummingbirds, and often lurk near a hummingbird feeder,
ready to pounce when a hummer zips past. Even if the hummer escapes,
one puncture wound from a cat's claws or teeth will introduce bacteria
into the hummingbird's bloodstream, killing it within days. Please!
Keep your kitty indoors!
Despite all these dangers, many hummingbirds manage to
live long lives. If hummingbird banders retrap a hummingbird after putting
a band on its leg, they can tell how long the bird has lived between the
two captures. The US Geological Survey keeps records of how long banded
birds have survived at the Patuxent Laboratory in Maryland. Here are the
hummingbird longevity records, as of May, 2000:
- Magnificent Hummingbird 7 years, 01 month
- Blue-throated Hummingbird 6 years, 11 months
- Ruby-throated Hummingbird 9 years, 01 month
- Black-chinned Hummingbird 7 years, 00 months
- Anna's Hummingbird 6 years, 04 months
- Broad-tailed Hummingbird 12 years, 02 months
- Rufous Hummingbird 8 years, 01 month
- Allen's Hummingbird 4 years, 00 months
- Calliope Hummingbird 6 years, 01 month
- Lucifer Hummingbird 4years, 01 month
- Buff-bellied Hummingbird 6 years, 01 month
Try
This! One Bird's Life
- To learn
how old other banded birds have lived, see the Patuxent
Bird Banding Laboratory's Website. Choose one of the birds and create
a way to tell about its life as you imagine it. Write a autobiography,
draw a "photo album" or write a letter from the bird's point
of view.
|