Wednesday, July 19, 1989 THE REVIEW 9781-2nd St., Sidney B.C. Snakes do it, hares do if, people do it SUPPLEMENT SALE!!! \% smooth the feathers down close to the body, thus decreasing insulation and affecting heat loss. On cold mornings, our chestnut-backed chickadees and juncos fluff out their body feathers, trapping more air and increasing insulation which retards heat loss. Many of our other birds Icave for warmer climates in the wiriter. Perhaps the two most vulnerable animals to heat loss are humans and the threatened sea otter, the latter a victim of oil spills. Humans live ina extremely narrow band of temperature variation, so much so thata fluctuation of a mere 2 C spells trouble. Hence; they take the temperature rogulating mechanisms of their immediate environment with them to the High Arctic and scorching desert-suitahle clothing, : ON ... JAMIESON *xNATURE’S WAY kTROPIC SWISS SAVE 5% EXTRA WHEN YOU USE YOUR BLACK-TAILED JACKRABBIT _- Cy Hampson photo dwellings, stoves, blankets, ctc. And internally, they possess a “SAVER CLUB. CARD thermostat, the hypothalamus inthe base of the brain which measures 6 52-1 2411 SALE ENDS JULY 30/89 For several days, 1 have been watching the garter snakes that live and regulates the temperature of the blood bathing i its cells with great: : - under a pile of wood under our back porch on the south side of our precision. BRENTWOOD BAY. house. | have been particularly interested in their activities in relation The sea otter has an outer body covering of guard hairs which + are 7060 W. Saanich Rd. lo temperature. underlain by a dense coat of fine fur. When only a small quantity of In carly morning, shortly after the sun has reached the south wall, oil penetrates to the skin bencath the fur, it diffuses rapidly and the. a — —— they come out and stretch out on the black carth in the warming sun. otter, lacking the thick insulating layer of blubber common to many If it’s News Call the Review @ They are lethargic and fecl cold to the touch. marine mammals, suffers from hypothermia. Una Dobson, Norris, reports five vesper sparrows, a “quick, three , : 6 5 6-1] l 5 1 By 12 noon, they have warmed up a great deal and slither away. cheers” olive-sided flycatchers and an albino starling. quickly when one approaches. When very warm on a hot day, the : snakes seck the shelter of the shade of Mary’s tomato plants or leafy marigolds. Or they may retreat under the woodpile for a time. _ They, like virtually all amphibians and reptiles, are-controlling their | Wee S “hawt “ Sars body temperatures by changing thcir immediate environment for one oo Se , which will enable them to warm up or cool off. For such animals have V) mo = og ee ' : - REN a WY VOO wz: “Title else in the way of strategies, or mechanisms for regulating their i iLs 4 oe a cae _ body temperatures. a | S POSTAL OUTLET”. And I thought of the neighbor’s big shaggy dog, Lady, who romps ) - oe __ merrily along the beach with the youngsters. Her enthusiasm, for a ume, is boundless. She seems confident that this time she will catch a seal or three, bring back a brace of river otters or fetch at least one of those sea lions that she has watched plunging along a iw yards off — shore. But in an. hour, Lady returns and curls up on the cool concrete side: walk, not that far from the garter snakes, her broad pink tongue lolling from. her open mouth and dripping profusely as she pants heavily. She, too, is controlling her body temperature so that it remains within © 7 | | : : | | - BRENTWOOD BAY SHOPPING CENTRE the narrow range best suited for the sum total of a dog’s life. {CORNER OF WEST SAANICH RD. & VERDIER AVE.) | es a | - ‘The moisture from. her tongue, the lining of her. mouth, windpipe -and. lungs is evaporating which results in cooling. Dogs and their 7 relatives have very little in the way of sweat glands. © | | ee WE PACK YOUR PURCHASES WF] ~ In ‘the desert, I photographed: a black-tailed jackrabbit with - | Sidney 7 _ FREE BAGS LOW PRICES. _ enormous cars: While those large cars are functional organs. of sound: | ; FOODS | Te yerception, they serve yet another purpose in the hot environment. J “Prices | ‘AND GREAT. SERVICE we . Pic ears have thousands of tiny blood vessels which dilate when the eed ie “Effective : : a animal. becomes: to.warm, bringing large: quantities of heated, blood to : 2 oe ly wean ea BS ) i se eam: the sce nee heals 18 lost by. ‘radiation. oy es een = He 3 ] = the Fight ae Z "2531 BE ACON AVE, And this reminds me of Mary! She, too, flushes when unduly warm, 9 4 Quantities a a “sidney ‘By the Sea ot her blood vessels dilating at the surface i in the interests of promoting J “heat loss. ‘She also. perspires, Tosing excess heat. by. evaporative \ Cx ‘cooling. . of NAT: eee SIROCERCe REPRE NGNNNES CEA A PEER OERORTTEAURE ee Remember how your forchead cools during a fover in placing awe | E W. ZEALAND: cloth ovér it? In the reverse order, such blood vessels near the surface... -- tend to constrict when the animal i is lo cool, sharply decreasing heat loss. In East Africa, during. much of the day. hippos: take to, the cool waters of streams where they dissipate excess heat to the environment. Mice and volcs.in the cold winter climates of northern temperate and" ‘Arctic zones seck shelter under the insulating snow cover. Fishes and other marine forms live in surroundings in which an WE ALWAYS PRODUCE MORE FOR YOUR FOOD DOLLARS AT SIDNEY SUPER FOODS — | | WHOLE SHANKLESS — ; [BONELESS BEEF we “ : SCHNEIDER’ S WEEK ee 's FROZEN ASSORTED _ , SMOKED ae JISIRLOIN: MEAT PIES. nsnnnninsnmnnnnn 280 1649 pk, | temperatures do not fluctuate nearly so widely as they do in the: PICNIC ; 1 STEAK.. - 5.62 * FROZEN | 1.19 ~. habitats of terrestrial - vertebrates where changes: often involve well | Daren asennnerntransnaastnsaennctsen 1.72 ig, wewmenearent Lseeecrenn venermecnannnenrnaearaneremnasand i a SHEPHERD'S ples. iE yeeerenunnenenane 175g iil Be over 100 | - : VEAL SHOULDER | - "CHICKEN PARTS sssisinssnnsnsninn 20099. 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