July 21, 2008

Saturday, July 19, 2008

DAY 17

DEAN: Dave and I arrived safely in Resolute and will now head out to Yellowknife, Northwest Territories late this afternoon on the once-a-week flight – if the weather allows! Thanks to the Blog Buddies at the International Wolf Center for allowing us a great way to share our experiences with the Ellesmere wolves in that beautiful landscape.

And my thanks to Dave and Dean for ending each long work day by taking time to send the daily dispatch – mostly at 3:00 in the morning – so that we can all learn from their research and observations. And special thanks to Carissa Winter, Web Specialist for the International Wolf Center, for a superb job of designing and putting up this Blog. Watch for updates and additions! An article about the 2008 Ellesmere Island Arctic Wolf Expedition will appear in the winter 2008 issue of International Wolf magazine. If you are not a member of the Center, you can join online and receive this quarterly publication!

Friday, July 18, 2008

Day 16

DAVE: Our last night watching for wolves to interact with Elmer was uneventful except for the visit by a very nervous arctic fox that Dean can better describe. As we whiled away our last few hours fending off sleep and a light rain and hoping for just one more wolf visit to Elmer, we opined to each other how satisfying and scientifically fruitful this trip has been. We have been able to document two new pieces of interesting wolf information in our short visit: (1) the long daily distances wolves here travel from their den to areas with consistent food sources – daily round trips of over 40 km; and (2) the manner in which wolves examine strange wolves (Elmer) they encounter. Although the wolves made only two visits to Elmer, a total of 9 wolf visits were involved (1 night by one wolf plus 1 night by eight wolves). There appeared to be some strong commonalities in the ways all these wolves inspected Elmer. It will take several concerted examinations of the video tapes before we can be definitive about this behavior, but for now we believe we have some information that no one has known before. All that, and a glorious time, too! Thank you for joining us.

The wolf is superbly equipped for long-distance travel. From a literary standpoint, no one has described this adaptation better than Barry Lopez in his book Of Wolves and Men: “The movement down the trail would seem relentless if it did not appear so effortless. The wolf’s body, from neck to hips, appears to float over the long, almost spindly legs and the flicker of wrists, a bicycling drift (is) reminiscent of the movement of water or of shadows.” Unlike dogs whose elbows turn out, the elbows of wolves turn inward, thus allowing their feet to track in a straight line underneath their lean bodies. The long muzzle pulls in ample air to keep the blood oxygenated and the wolf’s internal cooling system finely tuned. Capable of moving along at a steady pace of 6 to 7 miles an hour depending on the terrain, the wolf can easily travel as many as 45 miles in a 24-hour period – perhaps more. The long, slender legs, huge feet with toes that grip and cling to rocks, and narrow chests allow wolves to plow through snow, climb boulder spills, and to accelerate their pace to achieve astonishing bursts of speed when chasing prey. Technological advances like satellite and GPS tracking devices have given scientists in the lower latitudes insight into precisely where collared wolves travel and how far. But not here, not in the high arctic. Dave and Dean have to rely on research conducted the old-fashioned way: long hours of observation where nothing seems to happen, their eyes intently sweeping the distant expanses of treeless landscape, watching for movement – and waiting.

DEAN: Last night was our final one in Eureka before heading south. One last time to watch for wolves. Dave and I set up Elmer, optimistic that at least some wolves from the previous night would return. However, no such luck. We did see the arctic fox, though, and it was comical how
high-strung and skittish it was. The fox was convinced Elmer was a threat and gave him a wide berth. I got a picture of the fox on one of his retreats. A plane came into Eureka earlier in the evening and was supposed to continue immediately on south to Resolute, but bad weather there forced the crew to stay at the Eureka Weather Station. Although our scheduled plane was expected to arrive and leave with us on board sometime late in the afternoon today (Friday), Dave and I realized we might have to get on the delayed plane instead, the one that stayed overnight here. Sure enough, once morning came and the weather cleared a bit, we were off to Resolute. There was hardly enough time to say goodbye to the weather station crew, but we have many memories to cherish. Thanks, Dave.

July 18, 2008

Thursday, July 17, 2008

DAY 15

DEAN: The recent waiting around for wolves to come to the vicinity of our base camp near the weather station has finally paid off! For a few days now, we have set up a wolf mount, affectionately called “Elmer,” to help us better understand wolf behavior. The mount is particularly suited for conservation/education purposes. Elmer is no ordinary wolf mount in that its legs are removable, and the tail has a wire that allows for different positions. The removable legs are simply to make the mount more portable, and I use an old golf club bag that everything fits into. The mount is very realistic looking, thanks to a great job done by the taxidermist in Yellowknife, Northwest Territories, Canada. Dave and I wanted to set up the mount in advance of wolves coming through the area so that we could observe their response. This is a great opportunity to document aspects of wolf social behavior.

I have heard diverse opinions about what the wolves might do when they encounter “Elmer. “ On two occasions during the past 10 days, we have had wolves approach the mount, and we have noted similarities in their reactions and differences as well. Of course, we need more encounters to note patterns, but the initial sniffing around exhibited by the various wolves has been interesting. Hopefully, the breeding male makes his appearance tonight before we have to leave Eureka. I have video-taped each encounter. For now, I will leave you to speculate on some of the outcomes. Meanwhile, I will get some frame captures from the video for posting.

The wire that makes the tail position on the mount adjustable is an important feature becau
se tail posture and body attitude are visual signals that reveal the rank relationship among pack mates. By being able to interpret these signals, wolves convey and confirm their status with the other members of their family. Thus, there is no need for conflict and recurring reminders about who is in charge. The parents, called the breeding pair by wolf biologists, often carry their tails in an elevated position, one of the ways in which they signal their rank as “heads of the family.” Their offspring of various ages within the pack signal their recognition of the parents’ dominant roles by carrying their tails in a lower position. Older siblings may exhibit dominant body positions or higher tail carriage with their younger brothers and sisters. Submission is signaled by a tucked tail and a lowered body position.

DAVE: Even though we both believe we have located the den, we agree it is too far away from our hilltop vantage point. We would not be able to see the pups from our lookout, and we can’t get any closer than 2 miles because of the mud flats. Thus, our big focus is on using the mount we call Elmer. We waited for the wolves to approach our base camp from mid-afternoon to midnight on Monday, Tuesday and Wednesday to no avail. Then last night, 30 minutes before packing up and calling it quits, we spied a couple of white backs about half a mile away coming our direction. Then another, and another, and another, and finally – EIGHT wolves! We got great video of them inspecting Elmer. After the wolves left Elmer, we followed them from 12:18 a.m. as they headed west along the fiord. Found them chasing leverets (young arctic hares). It was hard to keep track of 8 wolves and several leverets, so not sure the wolves caught any. They headed 1/8 miles up Station Creek and then west up the hill paralleling the fiord and then down to the fiord. They were not afraid of Dean and me, and several of them grouped around us. We then accompanied the pack, some ahead of us, several behind, as we tried to keep up with the leader. I kept trying to figure out the gender of the leader, which was scratching regularly at scent-posts. Finally, I realized it was the breeding female. She would do a slight raised-leg urination (see photo), which from a distance looked like a squat defecation, and then she would scratch vigorously. No breeding male to mark with her – he must have gone off on his own earlier. This was a rare occasion to watch the pack while led by the female. We think this is the same female we saw earlier, but no way to prove that. A leveret suddenly jumped up, and all 8 wolves took after it. It gave them a terrific run for their money, but in the end it succumbed to one of the wolves. Two others then gathered around the animal with the young hare, and the breeding female ended up with it and ate it. The wolves returned to the place where Elmer had been and several times carefully examined the spot where he had stood. Then off they headed to the east at 2:58 a.m., and we headed to camp for dinner and to crash.

Stiff-legged scratching sometimes follows urination and defecation scent-marking by the breeding pair. This scratching may spread additional scent from the numerous eccrine sweat glands in the footpads. Also, the obvious scratch marks may be visual cues that call attention to the urine or fecal scent marks.




DAY 15 (CONTINUED)


Thursday, July 17, 2008
DEAN: Here are some video frames I took on the first day we decided to conduct some behavioral observations using Elmer. In this sequence, one subordinate wolf (we think is a male) comes in to the area near our base camp where we have set Elmer up. In this encounter, the wolf eventually bites Elmer on the back and pulls him down, then drags him before I intervene. I had to save Elmer’s hide, so to speak!

Note the tucked tail of the wolf as he sniffs the air and
approaches Elmer. It is impossible to know what prompts this wolf’s reaction to Elmer, but it’s tempting to conclude that he is trying to drive the trespasser away. Wolves are territorial, and they vigorously defend their territories against encroachment from interlopers. Perhaps the subordinate wolf thinks Elmer is a stranger that has ventured into his family’s domain. Clearly, he is depending on his nose to identify Elmer as either a pack member or an intruder, but since Elmer is a taxidermist mount, it’s hard to know what wolf-like scent, if any, he has retained!




DEAN:
Here are the video frames from Elmer’s encounters with various individuals of the eight-member wolf pack that came in last night. There appear to be 5 yearlings (based on their size and behavior) which is consistent with the number of pups observed last year after Dave and I left Eureka without seeing any wolves. The ragged-tailed wolf is the breeding female, and she led the rest of the pack in last night. We are headed out for what we hope will be another evening of “ Encounters with Elmer.”

Yearlings are as tall and as long as adults, but like human adolescents, they have not put on the weight, bulk and stature of their parents and older siblings. They sometimes have what observers call a “bad-hair day.” That is, they may have long hair on the tops of their shoulders that drifts in a halo of tangles as they move about or stand in the wind. Like human teenagers, they may act confident one minute and clueless the next!

July 16, 2008

Wednesday, July 16, 2008

DAY 14

DAVE: There is not much to report. We had a problem with one of the ATV’s (all terrain vehicle), and that took much time, but it’s fixed. We sat out all evening at our base camp hoping the wolves would come to the area near the weather station but saw none. Weather is cloudy, but not much wind. It’s about 35 degrees, so it’s comfortable, and there are no bugs!

DEAN: I took a photo of Blacktop Ridge with snow on the high elevations and also one of icebergs in the fiord and of some dwarf fireweed.

Visible from the base camp, the brooding bulk of Blacktop Ridge looms in the near distance. The icebergs drifting in the fiord in July are reminders of just how far north the researchers are. But colorful flowers bloom briefly in summer in this otherwise stark landscape. Among them is the dwarf fireweed that covers the ground in places with a brilliant carpet of intense color.

July 15, 2008

Tuesday, July 15, 2008

DAY 13

Dean: We got a late start yesterday because of the poor weather. It snowed on and off throughout the day. It's a wet snow, so it's not permanent on the ground but visible on the hills and higher elevation areas. Visibility is down to about a mile, so there was no point trying to watch for wolves across the river, We mapped out the bearings from our observation spot on the river, and the suspected den is 2.5 miles away from that vantage point. However, we decided not to cross the river because we'd likely only get bogged down in the mud flats. The weather station manager told us that one of the station staff saw three polar bears at the mouth of the fiord in the morning. I suspect they were a family group. Apparently all three bears were similar in size, so likely a mother bear and her two-year-old cubs. We're inland about 6 miles, so those bears will likely stay out on the sea ice. We also heard that a wolf was sighted around the airstrip early in the morning. We didn't get out that way until evening. We wanted to conduct some behavioral observations on any incoming wolves to the area near the weather station and our base camp, but saw none last night. We haven't seen the breeding pair for a few days now, so we are hoping that tonight, Tuesday, brings us better luck.

Dean's career as a wildlife biologist includes years of studying polar bears as well as wolves and caribou. The poor visibility is frustrating even though the researchers know that weather is one factor no one can control.