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mouse

Northern red-backed vole and Korean field mouse (click image to enlarge)


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This week, we’re meeting the mammals of Primorye, a region in far eastern Russia. (See yesterday’s musk deer for a little more about that fascinating area of the planet.) Well, it’s late and I’ve had a rough day, so…I don’t have much to say about these two rodents, other than that the one on the left is the northern red-backed vole and the one on the right is the Korean field mouse, and of course they both live in Primorye. Do enjoy the drawing, though, and I will probably be more loquacious on tomorrow’s mammal.

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Five Random Rodents

by JR Kinyak on April 8, 2011

in Operations,Rodents

Five random rodents (click image to enlarge)


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Rodents keep me up at night. I can hear them scritch-scritch-scritching in the attic and the walls. Their whiskers lightly tickle my skin and their buck teeth gnaw on my bones. Their beady little eyes stare at me from every corner, glinting in the dark. Not because my house is infested—it isn’t—but because of the Daily Mammal Rodent Problem.

Of the 5,000-ish mammal species in the world, 40 percent are rodents: small, toothy, bewhiskered, scurrying, and so nauseatingly beige. Tan. Grayish-brown. Buffy to tawny ochraceous with white underparts, if you want to get technical. In my database (the Smithsonian’s Mammal Species of the World), there are 2,278 ratty little pipsqueak rodents.

So there are thousands of them, but so what? Mammals are mammals, right? Right, but there are no photographs of many of these rodents. None! And they are boring. I would guess that 80 percent of them look alike. In fact, one family of rodents, Muridae, accounts for one sixth of all mammals in the world. Well, depending on how you count and whether you consider Cricetidae part of Muridae or its own family. I think. No rodent has ever been called charismatic megafauna, not even the largest rodent, the capybara, which I drew years ago.

They just aren’t fun to draw, which I could get past if they were at least easy to draw, but the lack of reference images makes it so frustrating. I have to find related species that people have taken photos of and then find descriptions of the species I’m actually drawing—see the above “buffy to tawny ochraceous with white underparts”—and sort of improvise. And I know that I take some liberties in my drawing, I mean, my work is not hyper-realistic and it’s not going down as the definitive record of what any given species looks like, but I still want to be accurate in my own way, and I have wicked perfectionist tendencies that make me uncomfortable when I feel like I’m falsifying anything.

So I’ve been putting the rodents off. My idea of drawing multiple rodents in one go has helped, but if I happen to pick one that appears to be short on reference, I’ll usually skip it, telling myself that maybe someone will take pictures of it in the next few years. I have been trying to draw rodents. I’ve drawn 108 rodents out of 380 mammals total, which means that 28 percent of my drawings have been rodents. It’s not 40 percent, but it’s not too bad. But I am still terrified that if I see this project through, I’ll be drawing nothing but anonymous beige furballs for the last decade.

This all brings me to my new idea, which is: Random Rodents! I went to random.org, which generates random numbers, and told it to pick five numbers between 104 and 2278, which were the numbers of the undrawn rodents in my database when sorted by…whatever, you get it, yes? It picked 1789, 1873, 903, 1565, and 980, I researched the rodents associated with those numbers, and here they are!

Notice that we got lucky with the porcupine; the other five, although varying from 7 centimeters to 20 centimeters in length, look like quadruplets. Sure, some of them have long tails and some have slightly shorter tails, and some are ochraceous to tawny while others are tawny to ochraceous, but all in all, I could probably just spend a week drawing generic beige mouse-like critters and no one would know the difference.

The porcupine is Hystrix cristata, a North African crested porcupine. The others, top to bottom and left to right, are Leopoldamys sabanus, the long-tailed giant rat; Pelomys campanae, the bell groove-toothed swamp rat; Punomys lemminus, the puna mouse; and Reithrodontomys paradoxus, the Nicaraguan harvest mouse. I’ll try to do a Random Rodents drawing once a week and together, we’ll force our way through this rat’s nest.

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Spiny Mice Five Ways (Acomys spp.)

by JR Kinyak on June 8, 2010

in Rodents

Spiny mice (click image to enlarge)

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The spiny mice are native to the deserts of Africa, Asia, and Europe. They get their name because of their spiky fur, which defends them like a hedgehog’s spines. Clockwise from the top left, we have Acomys russata, the golden spiny mouse; A. spinosissimus, the spiny mouse; A. minous, the Crete spiny mouse; A. cilicicus, the Asia Minor spiny mouse; and A. nesiotes, the Cyprus spiny mouse. I like my drawing of A. cilicicus the most and I can’t stand my drawing of A. spinosissimus.

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April 19: Daily Mammal 24-Hour Mammal Marathon 2! Details later this week.

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Those of you who have been following the Daily Mammal from the start know how daunting the rodents are. Nearly half of the 5,000 named mammal species are rodents, and as Ivan T. Sanderson says in Living Mammals of the World, “whole slews of these look almost exactly alike.” Not only are there are thousands and thousands of them, something I had not considered when I decided to begin this project, but there aren’t very good photos of a great many of them. A while back, I drew a set of five sleeping dormice, and found it heartening to check several rodents off the list at once. Here’s another of those multi-mouse drawings. This time we’re tackling five deer mice (major hantavirus carriers), of the Peromyscus genus.

I didn’t have photographs of a single one of these mice. Instead, I had photographs of Peromyscus species that are much more common in the US, and I had very detailed descriptions of these five species from the species accounts in Mammalian Species, which I download in PDF from Virginia Hayssen’s website. Now, let me tell you, I do not as yet speak the language of zoology, but I’m going to learn it. There are standard names for describing animals’ fur, or pelage, as we mammalogists call it: ochre, buffy, tawny, and a wash of brown may all mean tan to you and me, but not to those whose eyes are trained to discern the nuances. Would my biologist readers let me know where I can get a chart or something that shows what those colors really are? I read that Munsell Soil Color Charts are used for describing pelage—is that where these names come from? I’d like to know.

Anyway, in drawing these mice, I had only the scientific descriptions to go on, and only my experience with acrylic paints to help me decipher the meaning of the colors. (Well, that and the fact that I’ve known three cocker spaniels named Buffy.) Here’s where you come in.

CONTEST: I’m going to type, below, some hints from the descriptions of these mice. The first person to identify in a comment to this post which of the five is which wins this drawing, matted and ready for framing. Ted is not eligible. Here we go.

Aztec mouse (P. aztecus):

  • Dorsal coloration is pale ochre mixed with black
  • Sides are reddish
  • Underparts are light buff
  • A black orbital ring is present
  • Size is medium

California mouse (P. californicus):

  • Annulations are not thoroughly concealed
  • Color is generally blackish brown above, sides ochraceous-tawny, venter pale olive gray to buffy brown
  • Largest species of the genus in the United States

Canyon mouse (P. crinitus)

  • Feet white
  • Dorsal pelage silky
  • Dorsal individual hairs lead-gray at base, succeeded by ochraceous to buffy subterminal band, and tipped with brown or back; dark grayish bases of hairs sometimes visible through buffy to pale grayish shade of dorsum
  • Hairs of forehead, nose, and face appearing slightly more grayish than body
  • Venter white
  • Size small to medium for genus

Gleaning mouse (P. spicilegus)

  • Unworn pelage has upperparts rich, tawny approaching ocherous rufous, dusky and dusky-tipped hairs uniformly distributed throughout upperparts
  • Black or nearly black orbital ring extends posteriorly into a grizzled area between the eye and the base of the ear
  • White feet
  • Tail blackish-brown above, white below with coarse annulations
  • Medium in size for the genus

Hooper’s deer mouse (P. hooperi)

  • Upper parts grayish with faint to moderate wash of brown
  • Underparts pale cream
  • Hind feet and lower legs whitish
  • Medium size for genus

Good luck!

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Five Species of Dormouse

by JR Kinyak on February 6, 2008

in Rodents

Don’t forget to download your free Daily Mammal valentines!

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Hello from Orange, Texas, and the Holiday Inn Express. Here is a drawing of not one, not two, but count ‘em, five dormice. And not only are there five dormice, but get this: they’re five dormice of different species. (Yes, this is a strategy to speed up the drawing of the 2,000 or so rodents in the world.) Please be advised that they would not ordinarily be all together in a nest like this, living as they do in different areas and such. But you would be likely to find any one of the five sleeping if you found them at all: they’re nocturnal, spending most of the day in a state of torpor and hibernating half the year.

Clockwise from the top left: Dryomys nitedula (forest dormouse), Eliomys melanurus (Asian garden dormouse), Glirulus japonicus (Japanese dormouse), Myomimus personatus (masked mouse-tailed dormouse), and Muscardinus avellanarius (hazel dormouse), the species immortalized in Alice in Wonderland.

This mammal is sold. Find another one to take home with you!

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click image to enlarge

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Hey, little fellow, what are you doing up and about? You should be hibernating with all your friends!

Woodland jumping mice hibernate for six months out of the year—roughly October to May—in burrows that they either dig or borrow from other little mammals. They like to eat fruit and seeds and mushrooms and insects. And lots of things like to eat them, too—bobcats, owls, rattlesnakes, skunks, wolves, etc., etc.!

You’ll notice this one’s extremely large hind legs. That’s to help him jump—woodland jumping mice can jump a meter or more! I suspect the super-long tail helps in this somehow. Maybe Lisa, who requested a woodland jumping mouse, can tell us!

Take this mammal home with you!

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Meadow Vole (Field Mouse) (Microtus pennsylvanicus)

by JR Kinyak on December 18, 2007

in Rodents

Please consider contributing at least $25 to Defenders of Wildlife to get your own original Daily Mammal art! Read more about 24 Mammals in 24 Hours! There are only five four three spots left!


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The meadow vole, meadow mouse, field mouse, or field vole is among the most populous mammals in the northeastern United States. Female meadow voles have to start reproducing when they’re three weeks old, and then they have litters about every three weeks thereafter, presumably until they die. (Males wait until they’re around six weeks old to start reproducing.) Can you imagine?

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