WILDLIFE REPORT FROM N.H. FISH AND GAME - July 22, 2005
This month the Wildlife Report looks into how our wild creatures cope
with the summer heat. Hope you're managing to stay cool and get out to
see lots of great wildlife!
IN THIS ISSUE:
* How Do Wild Things Keep Their Cool?
* Moose Wishing for Winter
* A Way Out for Bats
* Become a "Wonders of Wildlife" Docent
* N.H. Deer CWD-free
THE HEAT IS ON! HOW DO WILD THINGS KEEP THEIR COOL?
The hottest days of the year are at hand. While we can escape to our
air-conditioned offices, cars and homes, the wild things have their own
methods of keeping their cool. For starters, most wild critters shed
their winter coats, just like us, and go with a much lighter covering for
the summer. Even the birds have far fewer "summer" feathers. Gone is
the luxurious winter fur of the mink, fisher or fox. Deer have shed the
long, hollow insulating hair of their winter coat. In fact, not only do
deer have less hair, but you'll notice that deer even are sporting a
much lighter-colored reddish coat of hair for the
summer. They'll put on their darker winter coat to absorb more warm
sunlight this fall.
Did you know that wild critters have AC, too? Sure they do. We call
them ears! Deer, moose and rabbits, as well as all others with ears, use
them to radiate heat away from their bodies. The ears are full of blood
vessels that help move the heat out of their bodies.
Just like we humans, wildlife prefers the nightlife on these hot summer
nights. During the day, bears will go to the local bog to wallow in a
cool spring-fed hole in the ground to stay cool. In fact, lots of
critters will head underground during the hot summer days to keep their cool.
Just like you'll probably be spending a little more time in your
basement, or at least appreciating it a little more, this summer. Don't
forget to keep plenty of fresh water available for your pets at all times
this summer and make sure they have shade. Your basement is a great place
to keep your pets cool, too. --Eric Orff, wildlife biologist
MOOSE WISHING FOR WINTER
Like every good Yankee, moose hate the heat. They don't spend the dog
days of summer in lazy contemplation of possible summer fun. They spend
it praying for cold or rain or possibly both. Moose are perfectly
adapted for extreme cold and this, unfortunately, makes them not so well
adapted for heat. First there is the fact of their large-volume-to-surface
ratio. An adult bull moose weighs around 1,200 pounds, but is only 6
feet tall at the shoulders. That's a lot of volume packed into a
relatively small surface! If you've ever gained 50 pounds while remaining the
same height, you'll instantly understand how a larger volume-to-surface
ratio causes problems with heat dissipation.
While you're still packing those extra pounds, put on your
grandmother's old mink coat. Now you're coming closer to understanding heat from a
moose's point of view. A moose has one of the thickest hides and most
insulative hair coats of any land mammal. Moose do completely shed their
winter coat every spring, but they immediately grow a new hair coat of
both hollow guard hairs and wooly undercoat. As a result, moose start
to heat stress when summer temperatures reach 57 degrees F and are
panting by 68 degrees F.
A moose's idea of a fantastic vacation would probably be the Arctic
Circle in August. Sadly, they can't call a travel agent, so instead they
hunker down and try to stay cool. They accomplish this in a variety of
ways. If moose get too hot, they can reduce their heat load by panting
or, like us, sweating. To avoid getting hot, moose will reduce their
activity and stay out of the sun during the hottest part of the day. They
may bed down in shaded wet areas, getting rid of heat through
convection.
If it stays hot for several days, moose will also limit their food
intake. Finding, consuming and digesting 40 pounds of browse every day
creates a lot of heat, so by limiting food intake, they can also limit the
amount of heat they generate. Unfortunately, this can cause problems in
late winter if a moose fails to gain enough weight in the summer to get
it through till spring. Too much heat stress in the summer can cause
moose to starve to death by winter's end. Is it any wonder they prefer
cold, wet summers?
Living in New Hampshire, moose are very nearly at the southernmost
extremity of their range. Our highest moose densities are found in the
northern portion of the state and moose densities diminish rapidly as you
travel north to south. We are very fortunate to have moose in our state,
but if you live in southern New Hampshire you need never worry that
moose densities may increase till there is a moose in every backyard.
Unless, of course, every backyard comes with a shaded pool! -- Kristine
Bontaites, Wildlife Biologist and Moose Project Leader
A WAY OUT FOR BATS
Watch out! Duck! Take cover! Is that a bat flying around in your
bedroom? By mid-summer, bats born a few weeks ago are ready to try out their
wings. Some of these bats end up in strange places, like right in your
bedroom. Isn't it amazing how, as adolescents, bats make foolish
mistakes just like we humans do?
The best way to get rid of an unwanted bat is to give it a route to fly
outside. Get children and pets into another room and isolate the bat to
a room by closing the door, keeping the bat inside. Then, open the top
of a window and simply let the bat fly out.
Avoid handling the bat if possible, but if the bat won't fly out, put
on gloves and throw a large cloth over the bat. Scoop it up inside the
cloth and toss the whole bundle outside.
Bats only rarely have rabies. However, if any person or pet is bitten
by a bat, be sure to save the bat and have it tested by the State for
rabies. But remember, don't touch dead animals - if it is absolutely
necessary to pick one up, wear rubber or latex gloves. If you think you
have been exposed to rabies, seek medical advice immediately. There's more
advice on the Fish and Game website.
Remember, in New Hampshire, a bat in the house just needs a way out!
--Eric Orff, wildlife biologist
BECOME A "WONDERS OF WILDLIFE" DOCENT
If you're into wildlife, like kids and have time to volunteer during
the day, you might enjoy being a Wonders of Wildlife (WOW) educator for
New Hampshire Fish and Game. A three-month training course for new
volunteers begins September 22.
Trained WOW docents travel to schools to present programs on New
Hampshire wildlife and endangered species, aquatic ecology and wetlands. WOW
volunteers get 11 sessions of free training between September and
February on topics like the importance of habitat; wildlife restoration
programs in New Hampshire; and furbearers. Lectures and other activities
give docents a chance to explore a wide range of wildlife themes,
including migratory birds, deer population concerns and the future of
endangered species.
Volunteers also learn teaching techniques and specific environmental
school programs. After the training is complete, WOW volunteers commit to
at least 48 volunteer hours of natural resource education over the
following two school years. The training sessions and most presentations
take place during school-day hours.
A full schedule of WOW docent training sessions and an application can
be downloaded from
http://www.wildlife.state.nh.us/Education/ed_WOW_docents.htm. For more
information on volunteering for WOW program, contact Stephanie Hicks at
Twin Mountain Fish and Wildlife Center, 1450 Route 3 North, Whitefield,
NH 03598; e-mail mgoody@ncia.net; or call (603) 846-5108 or (603)
271-3211.
NH's DEER CWD-FREE
New Hampshire's deer population shows no evidence of chronic wasting
disease (CWD), based on monitoring data gathered during the 2004 hunting
season. Chronic wasting disease is a fatal neurological disorder known
to affect white-tailed deer, mule deer and elk. There is no evidence
that people can become infected with CWD.
Chronic wasting disease was first identified in 1978 and remained
isolated in Colorado, Wyoming and Nebraska for about a decade. This spring,
CWD was detected in both captive and wild deer in New York State,
bringing the disease far closer to New Hampshire's borders than ever before.
To date, CWD has been detected in wild or captive deer or elk in a
total of 15 states and provinces.
During the fall 2004 deer hunting season, New Hampshire Fish and Game
collected heads from hunter-killed deer across the state for testing. A
total of 385 deer heads were sampled. All tested negative for CWD. This
monitoring is part of a nationwide effort to identify areas with CWD
and prevent its spread. For more on CWD as it relates to New Hampshire,
visit http://www.wildlife.state.nh.us/wildlife/CWD_QandA.htm.
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The New Hampshire Fish and Game Department is the guardian of the
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--
Copyright 2005 New Hampshire Fish and Game Department, 11 Hazen Drive,
Concord, NH 03301. Comments or questions concerning this list should
be directed to lpoinier@wildlife.state.nh.us.
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