We have a passel of hummingbird photos from reader Emilio d’Alise, which I’ll spread out over several posts. His notes and IDs are indented, and you can enlarge the photos by clicking on them.
I lived in Colorado for 11 years and Colorado has eight species of hummingbirds, but during my time there, I’ve only been able to capture photos of three species (the ones that came to feeders I had up):
The photos I sent are a sampling from this 2012 blog post, and the SmugMug Gallery for that post is at this LINK. Anyone interested in the technical aspects of the photos (ISO, shutter speed, f-stop, etc) can find it by clicking on the “i” icon in SmugMug.
All of the photos were shot by me on my deck, often just a few feet from the birds. Almost all the photos are cropped for composition and to isolate the subject. In Colorado, I has something like twelve feeders around the house and went through about 25 to 30 pounds of sugar per season, all the more impressive because it’s a short season (they get there in late May and by mid-to-late September, they’re all pretty much gone).
I have returned, and I hope that some of you have accumulated wildlife photos to send me for the cache. Now is the time!
Today’s contribution of spider photos is from Tony Eales of Queensland. His notes and IDs are indented, and you can enlarge the photos by clicking on them.
Spider guru Dr Robert Raven, Head of Terrestrial Biodiversity & Senior Curator of Chelicerata at the Queensland Museum, has been telling me for some time now that the way to survey for spiders is to leave your diesel engine running for a while, and the spiders will come crawling out of the surroundings like hypnotised zombies. I had tried this a few times with little success, but recently I tried it on some sandy loam in coastal heath near Bundaberg, Queensland, and it worked beyond my wildest expectations.
Big spiders, little spiders, huntsmans and jumpers and especially ground spiders all came out toward the car. As did a lot of native cockroaches. And at one site the engine vibrations seemed to induce a bunch of spiders to compulsively climb a small tree near the car. I can’t wait to try it again.
Here’s a small sample of some of the things that came running to the siren call of the diesel engine.
One of the larger spiders to come out (around 20mm) and an unusual one. Asadipus sp. There are only seven observations of this genus on iNaturalist. It comes from an Australasian family Lamponidae which has the undeserved reputation of giving necrotic bites, though there is no solid evidence for this idea.
This little guy is probably Epicharitus sp or something related. This genus of striking black and white spiders belongs to the family Gnaphosidae. This is a varied cosmopolitan family known rather unhelpfully as Ground Spiders. [JAC: Wikipedia notes that “Epicharitus is a monotypic genus of Australian ground spiders containing the single species, Epicharitus leucosemus.”, so that may be the species.]
This one isMituliodon tarantulinus, also knowns as the Little Tarantula even though it’s not remotely related to tarantulas. It’s in the family Miturgidae with the ominous common name of Prowling Spiders.
This is a juvenile wolf spider (Lycosidae). As it’s so young, it’s hard to guess at the ID. Quite pretty, though.
By far the most common family attracted to the car were members of the family Zodaridae AKA Ant Spiders. This one isHabronestes hunti and the next two are ones I have yet to get an ID for.
And lastly a couple of the spiders that climbed the small tree in response to the engine vibrations. Hamataliwa sp from the Lynx Spider family Oxyopidae.
It’s Sunday, and of course we must have a selection of themed bird pictures from biologist John Avise, which I have with me. Remember to get your own photos together!)
John’s narrative and identifications are indented, and you can enlarge his photos by clicking on them.
Tilting and Bobbing
Rhythmic bobbing is an odd behavior shared by this week’s two featured avian species: the Spotted Sandpiper (Actitis macularia), and the Louisiana Waterthrush (Sciurus motacilla). As each bird walks along the bank of a stream or lake, it routinely bobs its booty as if listening to a musical tune.
Why do they do this? I have no idea, but the question is on my bucket list of little queries I’d love to have answered. [More generally, I never cease to be amazed by how genes apparently can prescribe even the most ethereal of characteristics– animal behaviors].
Another quirky behavior of the Spotted Sandpiper involves its flight mode. Characteristically, the bird flicks its wings below the horizontal and dangles its legs as it flits across a small body of water.
Louisiana Waterthrush tilting up:
Louisiana Waterthrush tilting down:
Louisiana Waterthrush in-between bobs:
Spotted Sandpiper frontal view of breeding plumage:
Spotted Sandpiper, side view of non-breeding plumage:
Spotted Sandpiper tilting up:
Spotted Sandpiper tilting down:
Spotted Sandpiper in-between bobs:
Spotted Sandpiper in flitting flight:
Another Spotted Sandpiper in flitting flight:
Solitary Sandpiper (Tringa solitaria); this is another species that
sometimes tilts and bobs:
JAC: I’ve put a video of a spotted sandpiper below; you can see the bobbing beginning about 24 seconds in.
I’m conserving my wildlife photos for when I return to Chicago, though tomorrow we’ll have another themed bird post from John Avise.
But here are two photos of mute swans (Cygnus olor) I took yesterday while taking my exercise in an energetic perambulation around Jamaica Pond. The swans must have been accustomed to people, as they didn’t move when I slowly approached them.
Mute swans are Eurasian in origin, and were introduced to the U.S.
I haven’t yet decided whether to post wildlife photos for the week I’m in Boston, as photos sent to me there to replenish my waning stock might get lost. If you have some good photos to send, and I hope you do, please hold onto them until late next week.
Today’s photos come from Peter Sansun in England, whose ID’s and caption are indented. You can enlarge the photos by clicking on them:
Here are a few sample nature pictures that you may wish to consider for publication. The bird pictures were all taken within a short walk from my home here in the UK, on the outskirts of London.
I have included the Linnean names (where known) in the picture titles.
We have more photos from Paul Edelman, a professor of Mathematics and Law at Vanderbilt University. His notes are indented below, and you can enlarge the photos by clicking on them. I’ve put them in the order he lists in the second paragraph below:
In response to your call for bird photos, here are some recent ones. This time of year is really hard for the novice birder because so many of the birds are either juveniles and hence not in their full plumage and so difficult to identify or they are still molting and, again, difficult to identify. Thus all identifications below should be taken with a grain of salt. If I get them wrong I hope your expert readers will correct me. These photos were taken in and around Nashville with a Nikon D500 camera and a Nikkor 500mm f5.6 lens.
We have a decent backlog of photos now thanks to kind readers, but they continue to diminish at the rate of one batch per day, so please send yours in. Thanks.
Today we have regular Doug Hayes, who takes some lovely photos of the visitors to his bird feeders for his “Breakfast Crew” series. Doug’s captions are indented, and you can enlarge his photos by clicking on them.
Here is the 16th installment of the Breakfast Crew from Richmond, Virginia. The yard has been busy as usual, with a slightly different lineup. Last year, we were mobbed with starlings. This year, the cardinals have taken over with a big population explosion. It is not unusual to see as many as ten at the feeders or on the ground scavenging at one time. The females seem to get along pretty well, but the males spend much of their time chasing each other away from the food – and the females!
A juvenile American robin (Turdus migratorius) hanging out on the chicken wire enclosure we built around our tomato plants to protect them from squirrels (the little tree rats don’t eat the tomatoes, but will take a bite out of them just to assure themselves that they don’t like tomatoes).
A male house finch (Haemorhous mexicanus) surveying the yard from the pomegranate tree that overlooks the feeders. These guys are as numerous as the cardinals. I haven’t seen any purple finches yet. They got hit pretty hard last year by Mycoplasmal conjunctivitis, an eye disease that can cause blindness. The house finches seem to have weathered the storm OK.
Male and female house finches (Haemorhous mexicanus) sharing breakfast.
A Carolina chickadee (Poecile carolinensis) snags a tasty seed. Usually, the chickadees will grab a bit of food and fly away immediately. If things are quiet, they will place a seed between their feet while perching on the feeder and peck away the hull to get at the kernel inside.
It takes more than pouring rain to keep this Northern cardinal (Cardinalis cardinalis) away from the feeders.
A young Brown thrasher (Toxostoma rufum) hanging out on the tomato plant enclosure. Usually, the thrashers keep to the bushes surrounding the yard, but will go for the suet feeders when I place them out.
A pair of Mourning doves (Zenaida macroura) just chilling. Like their cousins the pigeons, they don’t seem to be the brightest birds. I frequently see them just sitting out in the open after they have eaten their fill, totally unconcerned about the hawks that patrol the neighborhood.
This male Ruby-throated hummingbird (Archilochus colubris) is king of the feeder. After feeding, he will perch a few feet away from the feeder and drive off any other hummingbirds that approach his territory and food source. He will even go after larger birds that get too close.
Good morning! This cardinal (Cardinalis cardinalis) seems to greet the day with a smile.
Baldy, a male cardinal (Cardinalis cardinalis) is a regular to the feeders. His head has been bare all summer, but now it seems as if he is sprouting some new feathers. There is a big debate among birders if this loss of feathers is part of the molting process or some kind of parasite infestation. I have seen this in cardinals, grackles, wrens and thrashers, sometimes with patches of feathers missing from other parts of the birds’ bodies. None of them seem to be ill or discomforted by it.
Everybody loves peanuts! This Carolina wren (Thryothorus ludovicianus) seems to have snagged a bit more than it could chew. It flew off with its prize to work on it in private.
A Tufted titmouse (Baeolophus bicolor). Another shy feeder. These little guys hit the feeder and fly off immediately with the first thing they can grab. It is unusual for them to linger more than a few seconds.
Chip Monk, the Eastern chipmunk (Tamias striatus) returns. I had not seen Chip in over a month, but we had some pretty heavy rain a few days ago and Chip was back. For some reason, rainy weather seems to bring her out into the yard and she will spend much of the day scrounging for seeds in the wet grass and plant beds.
Camera info: Sony A1 mirrorless camera body, Sony FE 200-600 zoom lens + 1.4X teleconverter, some shots hand held or supported by an iFootage Cobra 2 monopod and gimbal head, ISO 5000, f/11, shutter speed varies according to lighting conditions, in-body image stabilization and lens image stabilization on for hand held shots.
Stephen Barnard is back with some photos of the many elk (Cervus canadensis) that frequent his property. His narrative is indented, and you can click on the photos to enlarge them.
This year, because of the drought and irrigation restrictions, I’m not farming my fields across the creek. As an unanticipated result, the elk are there like I’ve never seen before at this time of year. Normally, they show up in October when hunting season starts and they get pushed around. This year they feel safe because there’s no farming activity.
The rut hasn’t started yet. The bulls are mixed together in the herds more-or-less peacefully. When it does start (I’ll hear bugling) there will be fireworks.
Today’s Sunday, and so we have a themed bird post from biologist John Avise. I particularly like this one as the birds are so interesting. John’s comments and IDs are indented, and you can enlarge the photos by clicking on them.
Thanks to the five or six readers who sent me nice photos, which will keep us going for a while. Without further ado, Dr. Avise:
All For the Love of Acorns
The Acorn Woodpecker (Melanerpes formicivorus) is aptly named because its life revolves around its mainstay food: acorns. These gregarious birds live in small colonies that construct and defend “granaries”. A granary is a tree into which the birds drill hundreds or thousands of holes into which they stuff harvested acorns for later consumption. As the acorns dry and shrivel over time, the birds continually remove and place them into smaller holes so that they remain securely in storage for future use. A granary tree is thus an extremely valuable resource that may even be “inherited” across multiple generations of Acorn Woodpeckers. These birds also tend to nest communally with two or more females and several males sometimes sharing a nest. This species also displays “helpers at the nest” which typically are offspring of earlier broods that remain to help rear nestlings in subsequent clutches.