Cygnet

 

Nearly two weeks ago, Joanne Siderius, Kokanee Creek Park’s senior naturalist, published some pictures of a cygnet.

Yesterday three of us saw what was apparently the same cygnet at close quarters, again at the park. I have seen a cygnet with its pink bill a few times previously, but only in November or December. This was the closest I had been. 

This might be a Tundra Swan or a Trumpeter Swan. There are ambiguous indicators. Joanne thought it was probably a tundra, and in the end that is my guess also.

 

Posted in birds | 5 Comments

Swan migration

 

Swans head south in the fall and north in the spring. Already there have been reports of the first swans coming through this region. Yesterday, when I went past a place of shallow water there was nothing to be seen, but when coming back there were four Trumpeters feeding. Here are two of them.

 

Posted in birds | 5 Comments

Apostrophe’s abrasion

 

Six years ago, I wondered if “if birds named after people will be the apostrophe’s last bastion.” <blog.kootenay-lake.ca/?p=20350>

I noted that we had lost the apostrophe in geographic names: “Around Kootenay Lake, Johnson’s Landing is officially Johnsons Landing and Queen’s Bay has become Queens Bay — despite no compelling evidence for multiple eponymous Johnsons or Queens.” However: “In ornithology, the possessive still rules when it comes to birds which have been named to commemorate the work of naturalists from earlier times.” The literature was replete with the Say’s Phoebe and the Barrow’s Goldeneye.

But now, ornithology is about to completely drop the use human names for the common names of birds. They will all be renamed. OK, ornithology in this case is the American Ornithological Society which sets the standard for common bird names in Canada and the U.S. This is described in a number of news stories. Consider: “These American birds and dozens more will be renamed, to remove human monikers.” It is available from npr.org/2023/11/01/1209660753.

Now, I wish to sidestep the reason for this change (which is the removal of “bird names deemed offensive or exclusionary”) and deal with the collateral damage of the elimination of the apostrophe. Alas, it will go.

The NPR story gives three examples, out about 80, that will change over the next few years: Wilson’s Warbler, Cooper’s Hawk, and the Steller’s Jay, all of which we have here.

The still Wilson’s Warbler will become what?

Cooper’s Hawk will change.

The Steller’s Jay is not only exceedingly common here, but it is the provincial bird of British Columbia. Will its renaming require legislation to continue its presence?

It will be interesting, but I will be sorry to see the continued loss of the apostrophe.

Posted in birds | 11 Comments

Buntings and finches

 

I went for the Snow Buntings, but stayed for the Gray-crowned Rosy Finches.

Often we go for a delightful walk along the shore or in the woods, but see little that prompts a blog posting. Now and then, we are pleasantly surprised. The only occasionally seen Snow Buntings were welcome, but the Rosy Finches were exceptional.

Saturday morning started with the Snow Buntings. First observed by Paul Prappas on Nelson’s dog walk, Cynthia found some there later and took shots. Then, three of us went out to Kokanee Creek Park in the afternoon to see if the Snow Buntings were also there and saw three. Good fun, for I have only seen these migrants every few years.

The prize was seen about 60 meters outside the Park. Although the Gray-crowned Rosy Finches were so uncommon at these low altitudes that at first, while interesting, they went unrecognized. These birds breed at the highest altitudes of any bird and rarely descend to the valley bottoms. It is even rarer to see a flock in the valley.

Let’s start with buntings.

A Snow Bunting on Nelson’s dog walk. Photo by Cynthia Fraser.

Two of the three Snow Buntings seen in Kokanee Creek Park.

Following this there were a large number of birds seen just outside the Park. They were alternately eating on the ground and flying to the next feeding place. This group contains less than a third of them. They took a while to identify. Photo by Cynthia.

There were more than sixty of these birds, and much of their time was spent on the ground finding things to eat. This small slice of them shows both the interior variety and the coastal variety. Photo by Cynthia.

Here is a closer view of the two subspecies. The interior variety is seen on the left (colour to below the eye), and the coastal variety on right (grey on the cheek). The coastal variety was most of the crowd, but clearly not all.

The Gray-crowned Rosy Finch is one of those birds that saves energy by alternating between flapping and gliding. Here it is gliding.

I don’t often get a chance to see a large flock of birds in close flight. So, it is fun to comment on something I have witnessed in a flock before: collisions. Now there are a number of web pages from reputable sources that will assure you that birds in a flock never collide. Alas, these sites are promoting nonsense. There are at least three collisions in this one picture. Birds collide in a flock all the time, but they recover quickly.

 

Posted in birds | 9 Comments

Weasel

 

Thud. A robin collided with a window and fell to the deck. What followed was unexpected.

Soon a Short-tailed Weasel found the robin. Now it wasn’t clear whether the robin was dead or just stunned, but the weasel quickly settled the issue. 

A Short-tailed Weasel is a prolific land predator. But, it is cautious, usually hunts at night, stays well hidden, and is really fast. It is thus not an easy animal to photograph.

This portrait and the following two were taken through a window. It seemed to know it was being watched, but was determined to get away with its prize.

The object was to now move the robin to some other place and to eat it there. The deck of the house was not sufficiently private.

It grabbed the bird by its beak to try to move it.

The weasel stopped and looked around. It was remarkably cautious.

This blurry shot would normally be a reject, but not this time. The weasel began racing toward the edge of the deck and was in the air with its prize. Its striped abdomen was a surprise.

This fast moving weasel then jumped off the edge of the deck, so as to have its feast below.

 

Posted in birds, mammals | 7 Comments

Golden-Plover

 

On October 1st, it was a gorgeously sunny day for strolling under blue skies along the sandy shores of Kokanee Creek Park. The bees were buzzing, corvids cawing, and gulls were feistily feeding on fish. But it was a lone, and possibly lonesome shorebird that caught my attention. 

Standing at the end of a sandy point was a bird with bright yellowish-gold flecks on its crown and wings. I suspect this bird is a migrating golden-plover.

When I first observed it,  the bird was standing still and looking around. Then it would walk or scurry a few steps and pause again, occasionally bending over to peck its beak into the sand to acquire food. Apparently, golden-plovers really like to eat insects and invertebrates, although they won’t refuse berries and seeds.

It also seemed quite happy wading in Kootenay Lake as it searched for food.

After perusing Sibley, Cornell’s All About Birds, and iNaturalist, my father and I think this bird’s markings are most consistent with a juvenile American Golden-Plover as opposed to the primarily coastal Pacific Golden-Plover. However, neither are common migrants through this area, so I am wondering what others think? I also wonder if this is the first recorded visit of a golden-plover to Kokanee Creek Park?

 

Posted in birds | 6 Comments

Cloudbow & glory

 

I no longer travel much by plane, so my opportunity to see cloudbows and glories is not great. But last week, I flew to the Coast, and for most of the way the plane was above a thick layer of stratocumulus. Now a thick layer of cloud decreases the contrast of these optical phenomena, but you make do with what is available and I did see both together.

Last year, I posted two pictures: a cloudbow (taken from a boat), a glory (taken from an aircraft). Although, each showed the same portion of the sky, the antisolar point, they did not show the other phenomenon.

This very wide-angle picture of a cloudbow was taken over a year ago from a boat. It shows most of the bow and a (supposed) reflection, but it does not show a glory. The photo was taken by my son, Alistair M. Fraser.

Also taken about a year ago from a plane is a telephoto shot of a glory. There was no cloudbow in the scene.

Last week, I was on a plane going to the Coast, and there appeared both phenomena. But, both are somewhat faint, possibly due to the thick cloud. The glory is on the left and a portion of the cloud bow is on the right. In a paper entitled, Simulating glories and cloudbows in color, Stanley Gedzelman says, “Glories are generally more distinct for clouds of droplets of as much as ∼10 μm [about 10 microns] in radius. As droplet radius increases, the glory shrinks and becomes less prominent, whereas the cloudbow becomes more distinct and eventually colorful.” So, the cloud in the glory picture above probably had most drops smaller than 10 microns radius, and above that, the cloudbow picture probably had drops very much larger. This just taken picture below, had drops in between in size. However, this scene does show the relative sizes of the two phenomena. (The wing and the edge of aircraft window is also on the left.)

 

Posted in weather | Comments Off on Cloudbow & glory

White-tail suckling

 

There are many white-tailed deer in the valley and they are, on the whole, quite visible. Yet there are some things that one rarely sees: rutting, mating, birth, and suckling. It is probably not that the deer has a sense of privacy, but that it has a sense of security about activities for which it, or its offspring, are more vulnerable to predators.

Last evening, I saw suckling.

This picture actually follows the next one in time and shows the fawn and parent having just separated. The fawn still has its tongue out and its hind legs are covered in mud.

This (somewhat confusing) scene shows the fawn suckling.

 

Posted in mammals | 2 Comments

Exotropia in bears

 

The word, exotropia, is not found in my computer dictionary. But it is found clearly on the web (e.g., wikipedia). It describes the situation were one’s two eyes, rather than looking at the same thing, are deviated outwards. In humans, exotropia is uncommon and is considered to be a problem to be corrected, for the two eyes then send two different images to the brain.

Bears have a marked exotropia at times. While the role that it plays in bears is speculative, the situation seems quite common and is apparently used to combine images to get a wider field of view.

I tried to learn about exotropia in bears, but found only one reference on the web. More on that below.

I start with two supposedly normal views of a bear’s eyes, one from black bears, one from grizzly bears. In these pictures, they are both presumably seeing the world in stereo for the pupils of each eye are looking at the same things. One assumes that, as with people, this is a bear’s default way of viewing the world.

A black bear looks at the world in stereo.

A grizzly bear looks at the world in stereo.

The next two pictures were used in recent previous postings, but now they are used to discuss exotropia. To see the effect, cover one eye of a bear to see where the other eye is looking, and then switch and cover the other eye. With each animal, the eyes are clearly divergent.

This black bear was fishing in a spawning channel.

This grizzly bear was fishing in a different spawning channel.

The only other reference I was able to find was one by a Vancouver-Island photographer and blogger, Wayne Barnes, who commented on the condition in 2012 and noted that V.I. black bears all seem to have divergent eyes (tofinophotography). On Vancouver Island, there were no grizzly bears and he had no data from the mainland.

My observations extend the condition to the mainland, and to grizzly bears. This suggests that it has remained a characteristic of bears since before the two species separated, about five million years ago. As the situation seems common in both black and grizzly bears, it is likely favourable for bears and can give them a wider field of view.

 

Posted in mammals | 2 Comments

Grizzly & Kokanee

 

A (female?) grizzly bear wandered by and began feeding on Kokanee salmon. Before wandering off, it had eaten perhaps a dozen Kokanee. A few days ago, I looked at black bears eating Kokanee.

I think the grizzly bear was aware it was being watched, but just went about its eating.

It was not particularly choosy. Sometimes it ate from the head first, and

… sometimes both, and

… sometimes the tail first.

 

Posted in fish, mammals | 5 Comments