Sitka Nature

Mystery Flycatcher photo composite

My son pointed this bird out to me this morning as we were on our way to Totem Park. It was perched at the very top of a mid-sized Sitka Spruce and I saw it do a flycatching loop once or twice before it seemed to vacate its spot when a Merlin flew by, after which we continued on to the park.

It was too far (high) to get a very good look, even with binoculars, but based on what I had seen, I was confident that it was a flycatcer, and thought it might be a Western Wood-Pewee based on behavior and an impression of size/shape (that is, it seemed a bit to small/squat for an Olive-sided Flycatcher based on my very limited experience).

When we got back a while later, we saw the bird had moved to a snag not too far from where we had first observed it. Though the light was better, the new preferred perch was even higher and further back than the first had been. I watched it for a while several different times during the day, and it was still actively flycatching from the snag until around sunset at least. The first time I saw it there was shortly before noon, so it had been there for at least 8 hours, and probably a couple more.

Though the bird was too far away for any chance of a quality photo, I took many in hopes that they would show enough details to allow for a better chance at a positive identification. I have included the best of these in the composite shown above. My best guess is still Western Wood-Pewee. The behavior certainly fits. However, some of its plumage characteristics raise questions in my mind. In particular, it seems to be rather pale breasted, the wing bars seem to be a more pronounced than I might expect, and there’s a pale area between the eye and the bill. Still, I’m not sure what else it could be. I wouldn’t be surrprised if these questions can be explained with lighting and/or variability in the species, so I’m hoping others with more flycatcher experience might help me out.

Last summer I noticed these white growths while doing some plant surveying work along Blue Lake Creek. At first glance I thought maybe they were rootlets coming from the trunk of the tree (either Red Alder or Sitka Willow, I can’t remember which). Closer examination revealed that they were actually growing directly from the moss. The only thing I have noticed growing out of a moss like that is sporophytes, but there are also sporophyts present and they seem different enough to make me think that the white growths are not a stage in the development of the sporophytes (though perhaps I’m wrong about this?).

I believe the moss is a species of Hypnum though I am not sure which one. So far, this is the only time I have noticed anything like this, so I am tempted to say it must not be very common. However, experience has taught me that I overlook many things, so I don’t really know how common it might be. In any case, I would appreciate any suggestions as to what might be going on with these growths.

A note on the photo: the image seen here was created from 3 initial images, each focused at a slightly different point. They were then stacked to give a greater depth-of-field using CombineZM.
It didn’t work perfectly, so there is a little bit of a funny look to some parts of the photo.

This gull is another mixed bag of characters.

Once again, I had difficulty getting photos of this bird with other individuals of more obvious identity. Unfortunately, I was also unable to get a straight profile shot. That said, my impression was that the size of this bird seemed consistent with what I consider normal for Thayer’s Gulls. It seemed pretty small to me for a Glaucous-winged Gull.

Despite the apparently small size, I probably would have figured it was a Glaucous-winged Gull due to the gray wing-tips, since, as a relative new-comer to the challenges of gull identification, I tend to privilege that easy-to-see field-mark over others (though perhaps I shouldn’t). However, I’ve never seen an otherwise obvious Glaucous-winged Gull with pale eyes. After looking in Gulls of the Americas, I see that up to 1% of Glaucous-winged Gulls can have paler eyes, but the example given there has eyes that are nowhere near as pale this gull’s. I thought Kumlien’s Gull might be a possibility, but they seem quite a bit paler overall, from what I can tell.

I saw a similar gull last year (look at the last gull in the entry) and thought it was probably a Glaucous-winged Gull, but now I’m even less sure. Still, I can’t think of any reasonable hybrid combination that might result in this particular blend of characters.

Any help with this identification is certainly appreciated.

More Gull Identification Challenges

Mid-February seems to bring the arrival of mystery gull season. I’m not sure if it’s just an impression, or actually true in practice, but it seems like around this time more large gulls show up around town where they are easy to observe. For them, it’s the lean time of year, and the food available around town certainly plays a role in the gathering. Once the herring really move in during late March or early April, they are very abundant, though not always as easy to observe closely, and gradually numbers thin out a bit as spring heads into summer.

I recently took pictures of three different gulls which are giving me a little identification trouble. I also realized that I have some photos of gulls from last year around this time that I have yet to get conclusively identified. Rather than cram them all into one post, I think I’ll let this be the start of a series of mystery gull posts.

Unidentified Gulls