Snow at last!

peripatetic mammals and birds, and a fungus attack

After a very dreary, dismal January, February produced some nice snow. Not enough, of course, and it didn’t last. But for a few days, snow made the daylight hours brighter and provided splendid opportunities for reading critter tracks. Here are some samples, along with ancillary observations.

A morning snowshoe walk at SAGA meadows, with fresh snow and partial sunshine was very productive. A river otter left its distinctive five-toed prints and sliding track all along the base of the ridge on the eastern side of the valley; it came from the Amalga area, heading to the saddle where the old horse tram crossed over to the Eagle-Herbert drainage. It’s a lot shorter to go by land than by sea (out around the Boy Scout beach to the mouth of the river), but we wondered why this individual chose to go by land. Maybe it likes sliding better than swimming? Long overland journeys are not unheard-of: we once tracked an otter from the Hilda Creek canyons up and over to the Fish Creek drainage near the start of the upper cross-country ski loop.

Red squirrels had been very active, making highways between brush piles and trees, and often diving under the snow, popping up several feet farther on. Under the snow there were a few little caverns whose floors were littered with the remnants of alder cones, where a squirrel had a picnic.

Snowshoe hares left their tracks especially under the drooping conifer branches. It was clear that hares had been munching twigs of highbush cranberry—small twigs of many bushes had been recently clipped and hare tracks nearby left no doubt about the clippers. Small well-trampled areas indicated a place, perhaps a latrine (?), where a hare had spent some time, but only a few of these had scattered pellets. We speculated that the hares might have re-ingested fresh pellets to extract more nutrients (a habit they share with many rodents).

A small bird—probably a junco—had hopped around under a low-hanging spruce branch and then flitted off, leaving short wing traces in the snow. A mouse or vole had travelled from one thicket to another, and some small rodent had nibbled the bark of tiny shore pines. A porcupine had wandered about before the last of the snow fell, leaving now-blurred but unmistakable traces of its passage. Near a small frozen slough, a mink or marten had walked over toward a tree; the prints were not clear enough for us to discern the subtle clues that might tell us which kind of beast it was and the trail was lost in a snowless patch under dense spruces.

A flock of red crossbills enlivened the morning, calling and flying from spruce-top to spruce-top, occasionally prying open a cone to extract the seeds. Did their messy feeding activities contribute to the fall of seeds we saw scattered on the snow or did the wind bring them all down?

We found good examples of the rough-bark fungus infection on alders, which featured in a recent essay. Some of the infected sites had been heavily used by sapsuckers, but these birds had been active in many places, leaving broad patches of their sap wells in the bark. Very young alders, still with their reddish bark, also showed signs of the fungus attack.

That was a good day, and so was the next one, when we snowshoed the upper loop at Eaglecrest. It was still snowing a bit up there, while the rain fell at lower elevations. Here, in addition to lots of squirrel tracks and those of a mouse, ptarmigan had been very busy, sometimes running across a wide open space, sometimes walking sedately from bush to bush. In one place we saw a pair of traces where ptarmigan had glided down onto the snow, wallowed forward for a few feet, and taken flight once more, leaving tell-tale depressions (from the jumping take-off) flanked by wing marks.

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