We are NOT spiders!

Harvestman 2 IMG_4346© Maria de BruynWhen I was about 13 years old, my girl scout troop went to a somewhat “primitive” camp for our summer adventure. We slept in tents and had toilet paper, but we had to construct what we would use such as a table, a toilet (a hole in the ground with a seat of branches lashed together), and a shower (with a tarp but held up with branches bound by ropes and a pail with a pull rope). The shower was fine except for one thing – some daddy longlegs decided to take up residence on the tarp and for me – and others – sharing the space with what we thought were long-legged spiders was not really our idea of fun.

It was many decades later that I discovered that daddy longlegs are acHarvestman 2 MdB signedtually called harvestmen (scientific name, Opiliones) and they are actually not spiders at all! In fact, they are interesting insects that do not really look like spiders except for the fact that most species share the trait of having those extremely long legs.

Many Opiliones species can detach a leg, which continues to twitch for some time after leaving the body – this is thought to serve as a distraction that enables the harvestman to escape from a predator.

Harvestman 1 IMG_4324© Maria de BruynSpiders and harvestmen are both arthropods but differ in various ways. Spiders have segmented bodies, while harvestmen have a body of only one segment, with their single pair of eyes sitting atop the oval structure, like the black eyes you can see on the orange harvestman here. Spiders, on the other hand, have 3 or 4 pairs of eyes, as well as silk glands that are lacking in harvestmen.

Harvestmen’s legs protrude from structures that look a little bit like mechanical nuts; they are actually called the coxa and trochanters. These may be the same color as the arachnid’s body or be of a different color.

IMG_3212 ©Maria de Bruyn blogHarvestman IMG_7970©Maria de Bruyn

harvestman IMG_4882©Maria de BruynSimilar to spiders, harvestmen do have a pair of pedipalps – specialized appendages – and these form the arachnids’ feeding apparatus together with the first pair of legs. This feeding organ is called the stomotheca.

The two harvestmen below were seen in early December at Mason Farm Biological Reserve. They were approaching one another, separating and then coming together again. I have no idea what they were up to. Mating came to mind but in winter?

Harvestman 2 IMG_1897© Maria de Bruynharvestman 2 IMG_1967© Maria de BruynMore than 6,400 species of harvestmen have been discovered on all continents except Antarctica, but it is speculated that there may be as many as 10,000 species. I have seen them in varied habitats such as a forest, on beach sand, clinging to plants and wandering about on manmade structures. They vary in color and appearance as seen below. Some are mainly one color, some are two-toned and others have patterns on their bodies.

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Some harvestman end up being parasitized by smaller insects such as the red mites seen catching a ride on this individual. If they don’t die, though, they can go on to mate, lay eggs and have offspring.

I used to avoid harvestmen if possible, but now I take an extra look at them hoping to find one with coloring and/or a body pattern that I haven’t seen before. Nature continues to be intriguing!

harvestman IMG_2090© Maria de Bruyn res

Patient fishers of the bird world

great blue heron IMG_8830© Maria de Bruyn resIt’s not uncommon for visitors to our ponds, lakes and rivers to see what look like tall, statuesque bird sculptures on shorelines. The great blue herons (Ardea herodias) – North America’s largest heron species – can stand for long periods without moving or only slightly tilting their heads as they exercise extreme patience in their quest for a morning, midday or evening meal.

If they have a chance for easy pickings, these herons will certainly take advantage of it, as I discovered when the koi and goldfish in my pond were disappearing. But in their natural habitat they will scan the water intently to find their prey.

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If you have the time and inclination to watch them for a lengthier period of time, you will note how they hunch down and stretch up as they position themselves to get good views of the water around them.

great blue heron IMG_4174©Maria de Bruyn (2) resgreat blue heron IMG_4242©Maria de Bruyn

great blue heron IMG_8791© Maria de Bruyn resThey stare downwards and to the side, following the movements of fish, frogs and crayfish. When the wind blows, their plumed neck and tail feathers sway gently and beautifully in the breeze.

great blue heron IMG_4343©Maria de Bruyn resIf nothing seems nearby, they will move with quiet and slow deliberation to another spot, often quite nearby. Unlike the snowy egrets, they don’t stir up the mud with their feet or flap their wings to create movement in the water.

When a fish does swim by, they burst into very fast motion, plunging their long beaks and whole heads down to grab what they have spotted.

 

 

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They are not always successful, sometimes coming up empty beaked!

great blue heron IMG_8878© Maria de Bruyn resgreat blue heron IMG_8879© Maria de Bruyn resBut their patience obviously does pay off, too.

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Once caught, they need to work the fish or other prey around so that they can swallow it down smoothly. As they swallow their meal whole, this is important. (And they can eat a very large meal; there is a film on the Internet showing a heron swallowing a groundhog!!)

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If you look carefully, you can see the meal slide down their long necks.

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Great blue heron IMG_0554©Maria de Bruyn resThis fishing strategy works well for the great blues as they can continue to hunt even when injured. This bird had a very badly damaged wing and apparently couldn’t fly anymore but it could stalk slowly in the lake as it looked for food.

The bird below had had some kind of encounter – either with a man-made obstacle or some form of wildlife that left it with an injured wing and broken leg. Bald eagles are one of the few predators of adult herons and this great blue lives at Jordan Lake which has a group of such eagles in residence. Despite the handicap, the heron could fly from spot to spot and then stand in wait for meals to swim by.

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If disturbed, these birds emit a very loud and harsh squawk or croaking sound and then often take off. They certainly wouldn’t win any singing contests with their definitively non-melodious calls.

great blue heron IMG_8516© Maria de Bruyn resgreat blue heron IMG_8940© Maria de Bruyn resgreat blue heron and egret IMG_5083© Maria de BruynThey prefer to fish in solitude and don’t care for other birds invading their territory. This great blue and great egret wanted the same spot and the great blue made some efforts to chase off its white competitor. However, the egret refused to leave and eventually they shared the spot with some meters of space between them.

Watching the herons fish has not only given me an appreciation for their innate patience but has also enhanced my own patience as well as I stand and wait with them until it’s finally mealtime.

 

A tiny bundle of yellow-feathered joy

ruby-crowned kinglet IMG_1148©Maria de Bruyn resWhile ospreys are one of my favorite large birds, the gorgeous ruby-crowned kinglet (Regulus calendula) has won my heart among my tinier feathered friends. Today I’m sharing some portraits of kinglets made the past couple months (in my yard and at Bolin Creek greenway in Chapel Hill, Jordan Lake woods, Sandy Creek Park in Durham).

One of the more active small birds (about 4 incruby-crowned kinglet IMG_5278© Maria de Bruyn reshes or 10-11 cm long), this kinglet is in almost constant motion, which makes getting good portraits a bit of a challenge. Despite this high level of activity, however, research has shown that the ruby-crowned kinglet only uses up to 10 kcal a day in energy. (Sometimes I think this holds true for me as well as the weight I want to lose just stays in place.)

 

ruby-crowned kinglet IMG_7952© Maria de Bruyn resTheir main diet consists of insects, including spiders, ants, wasps, beetles and aphids. They will also occasionally eat seeds, fruit and sap.

In addition, these kinglets – or at least the one that has been visiting my yard during migration the past couple years – also love suet a lot.

The ruby-crowned kinglet is known for its habit of flicking its wings as it forages for food; this helps it scare up insects (another bird that uses its wings in its hunt for food, like Northern mockingbirds and snowy egrets).

 

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Ruby-crowned kinglet IMG_2653©Maria de Bruyn res

 

 

Though they don’t look as adept as hummingbirds, they sometimes hover to get at insects on the underside of leaves; they show this hovering behavior at feeders, too, before landing or flying off with a piece of suet snatched in flight..

ruby-crowned kinglet IMG_2760 MdB res2Most of the time, the male’s beautiful little red crest (which gives the species its name) remains hidden unless it gets excited about something.

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The ruby-crowned kinglet seems to me to have an expression of perpetual wonderment as it flits quickly from one spot to another. Its thin little legs with yellow-red feet help it land securely, on a branch, wire or feeder.

ruby-crowned kinglet IMG_0633©Maria de Bruynruby-crowned kinglet IMG_4076© Maria de Bruyn res

ruby-crowned kinglet IMG_0617©Maria de Bruyn resIn my pursuit of portraits, I’ve found that just as I think I have the bird in focus, it has disappeared from my viewfinder and I need to look up and around to locate it again..Given its diminutive size, one wouldn’t expect that the female lays up to 12 – twelve! – eggs in its nest, which is elastic and can expand as the brood grows. The male and female stay together until the chicks fledge at about 2 months and they will defend the nest against intruders.

ruby-crowned kinglet IMG_4075© Maria de Bruyn resruby-crowned kinglet IMG_4074© Maria de Bruyn res

ruby-crowned kinglet IMG_8928© Maria de Bruyn2 resSometimes, I hear the chittering call before I see the tiny wonder and only very rarely get to enjoy its longer song, which apparently varies according to region.

Ruby-crowned kinglets can live up to at least 4½ years (as shown by a banded bird). I don’t actually know if there is more than one bird visiting me or whether another will take its place in time.

ruby-crowned kinglet IMG_0102©Maria de Bruyn resWhat is very cool for me is that my visitor can become very friendly indeed. Last year, on two occasions, I was carrying a replenished suet feeder outside when the kinglet flew in to perch on it as I held the feeder in my hands – giving me a great close-up view. I look forward to seeing if the kinglet will favor me with an up-close-and-personal meeting again this coming winter!ruby-crowned kinglet IMG_0639©Maria de Bruyn res

Plenty of persimmon pleasure!

Northern cardinal  IMG_7335© Maria de BruynMy side- and backyards are both blessed with a persimmon tree (Diospyros virginiana) but the one out back only produces small hard fruit for some reason. The large persimmon at the side of my house, however, is the exact opposite. Each year it is laden with fruit; much of it begins falling while the persimmons are still unripe or only half-ripe but plenty remains on the tree through the first frost. You need to have both male and female plants for the fruit to grow, but I don’t know where the male trees are – likely in a neighbor’s yard.

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I’d been warned that an unripe or only partly ripe persimmon would not be tasty and, when I tried one, that advice turned out to be very true. I later tried a really ripe persimmon as so many North Carolinians find it a wonderful fruit, especially in pudding, but I can’t say that it is much to my liking. You won’t find me using persimmons to make tea, wine, beer or bread.

white-tailed deer IMG_9971© Maria de Bruyn resIt is, however, VERY popular with the wildlife that is around my house. The first fallen persimmons are gobbled up by the white-tailed deer (Odocoileus virginianus), who don’t seem to mind a bit of astringent fruit. Our neighborhood has opossums, raccoons, coyotes and gray foxes (Urocyon cinereoargenteus) , but I haven’t seen their persimmon seed-filled scat – I think the deer get the fruit before they have a chance. (Too bad the stem was in front of the fox’s face; I don’t use Photoshop, but you can still see its beauty.)

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When the large orange berries begin falling on the ground in an ever riper state, the first diners include the bald-faced hornets (Dolichovespula maculata), whose beautiful large nest must be in a neighbor’s tree.

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Eastern yellowjacket IMG_2502©Maria de BruynEastern yellowjacket wasps (Vespula maculifrons), which can deliver a very nasty sting, show no interest in a human hovering over the persimmons to get a shot – they are totally engrossed in getting a piece of juicy fruit.

Southern yellowjackets (Vespula squamosa), also painful stingers, act likewise – their focus is entirely on the orange pulp.

 

 

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Paper wasp polistes metricus IMG_4359©Maria de BruynThe paper wasps (Polistes metricus) dig deep into the persimmon to extract some sweetness.

The red wasps (either Polistes carolina or rubiginosus; entomologists can only tell by examining the insect) also enjoy flitting from one fallen fruit to another in search of the sweetest bits. Sometimes they and the paper wasps challenge one another for territory.

Red wasp P carolina IMG_3495©Maria de Bruyn

Paper wasp polistes metricus IMG_3513©Maria de Bruyn res

Downy woodpecker IMG_7248© Maria de BruynThe next group of persimmon pickers are the birds. Some birds only visit the tree to rest or look for insects, like the downy woodpecker (Picoides pubescens) and the white-breasted nuthatch (Sitta carolinensis).

White-breasted nuthatch IMG_5997© Maria de Bruyn

 

 

A few birds just rest in the tree and others rest and occasionally peck at a berry, like the house finches (Haemorhous mexicanus).

 

House finch IMG_5956© Maria de Bruyn

Yellow-bellied sapsucker IMG_8379© Maria de Bruyn The yellow-bellied sapsucker (Sphyrapicus varius) though is a woodpecker that is highly attracted by the fruit. A few of these attractive birds – both adults and juveniles – have been visiting the tree every day for weeks now to enjoy a sweet treat.

 

 

 

Yellow-bellied sapsucker IMG_8263© Maria de BruynYellow-bellied sapsucker IMG_8233© Maria de Bruyn

The American robin (Turdus migratorius) will not turn up its beak at a piece of persimmon either. Perhaps next year I should take a leaf from their books and collect a few fruits to try a pudding??

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Oh, the webs we weave!

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Well, not we human beings but the spiders. Autumn is a great season to spider web IMG_9990©Maria de Bruyn resadmire the handiwork of spiders as they build temporary or semi-permanent abodes and hunting traps. During my walks in different areas this fall, I’ve seen various forms of webs, but none as large the 4-acre web found in a building in Baltimore, Maryland.

Many of the webs are really lovely as they shimmer in the sun, especially when covered with dewdrops.

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Not infrequently, you will see the web’s weaver hanging out, like this banded argiope (Argiope trifasciata).

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trashline orbweaver spider web IMG_7471©Maria de BruynresThe trashline orbweaver (Cyclosa turbinata) arranges bits of old prey in a line in its web, apparently helping to camouflage itself as it looks like another piece of trash in the web.

 

 

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The lined orbweaver spider (Mangora gibberosa) has a conspicuous web in that the center part comprises a dense circular decoration (called the stabilimentum) that shows up well against green vegetation. The rest of the web is barely visible, however.

Some spiders, such as sheetweb spiders, make webs that look like shallow bowls in the grass (the photo below right was taken looking down on it). The tiny sheetweb dwarf spider (Florinda coccinea) has a red body with black palps, eye region and caudal tubercle. There is only one species in this region of the United States,

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Arrowhead spider IMG_2662© Maria de BruynArrowhead spiders (Verrucosa arenata) suspend a few or more strands of silk along or across trails at about head height. Have you wondered how they manage to suspend a web across a trail that is quite wide? They first produce a fine adhesive thread that can drift over the gap with a breeze. When the thread sticks to something at the other side of the gap, the spider feels a change in the vibrations of the thread and then reels it in and tightens it. The spider then crosses the gap on this thread and strengthens it by placing a second thread and so the web begins.

If you are walking along looking up in the trees or down at the ground, it can mean you end up with sticky web in your face. The tensile strength of spider silk is greater than steel of an equivalent weight but much more elastic, so wiping that silk off your skin can take some doing!

marbled orbweaver IMG_9822©Maria de Bruyn resOrbweavers tend to make large vertical webs, like the ones being spun by the marbled orbweavers (Araneus marmoreus) in the next photos.

 

 

 

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The silk for a web comes from a spider’s spinneret gland, which is located at the tip of its abdomen. Some spiders have four pairs of spinnerets, some have one pair and most have three pairs of spinnerets.

 

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Each gland produces a different kind of thread, for example, for a safety line, for trapping prey or for wrapping up caught prey as shown by this writing spider (Argiope aurantia).

 

 

Here you can see how the spider is using one leg to help position the line of web being spun.

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Spiders expend a lotmarbled orbweaver IMG_9865©Maria de Bruyn of energy building webs and it is not uncommon for them to eat their own web in order to re-gain some energy used in spinning.

 

The spider is thus a great re-cycler in addition to helping keep the other insect populations in check! Nature is so cool.