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The Vinalhaven Sightings Report is organized and edited by Kirk Gentalen on behalf of Vinalhaven Land Trust and Maine Coast Heritage Trust. Out and about on Vinalhaven, MCHT steward Kirk Gentalen reports on what he and others have seen in their travels. Contributions of stories and photos are welcome, and can be sent to vinalhavensightings@gmail.com.



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Monday, August 25, 2014



Welcome to the vinalhaven sightings report - short one
August 24th, 2014

VLT and MCHT sponsored

 

Highlights – Cicadas, frogs, snake, shorebirds,  red necked grebe, pararsitic jaeger, spiders, dragonflies, other stuff 

 

Business – contact us – vinalhavensightings@gmail.com

 
 
 

Tiit trick – click on photos to make them “as huge as your monitor allows”.

 
Upcoming events – “slowbirds” (formerly known as “elderbirds”) Tuesday August 26th (tomorrow!) – will be meeting at 8:35am at State Beach for some birdwatching and more. If you don’t go to the Thursday hikes for fear of slowing down the group (they are slowpokes anyway) this is the outing for me. We’ll meet at the causeway.
pitcher plants
photo by Banner Moffet

 Early birds – 7am Thursday morning bird walk – this Thursday! August 28th. 7am at skoog to carpool.

 


dog-day cicada, with finger
photo by Kate Bennard
Sightings - Insects Calderwood neck – great photos sent in from Calderwood Neck by Kate Bennard. Looks to be a dog-day cicada (Tibica curicularis), but it should be acknowledged that there are over 25 species of cicada in north eastern north America and the book we use has photos of 4 of the species.

cicada
photo by Kate Bennard
 

Here’s what Donald Stokes has to say about cicadas…”the sound of cicadas is made in an entirely different way from the sounds of other insects. In the last segment of the thorax, there are two hollow cavities covered on one side with membranes that act like drum heads. Attached to these membranes are muscles that cause the membranes to vibrate. Most of the mass of the large abdomen of the adult cicada is empty, a large hollow chamber, and this may help amplify the sounds produced in the thorax.

 

The sounds of cicadas are made by the males and have the effect of attracting other males to the same spot and stimulating them to sing as well. This can result in a large number of males all gathered in the same trees and all calling”.

 

lilies
photo by Banner Moffet
Kate mentioned hearing the cicadas – “Oh my word....they are so loud” which is the typical comment when cicadas move into the neighborhood. Sounds like it might be a new sound for the area, which is exciting, except that they are really loud. And those cicadas are “crazy fliers” that at some point will likely fly into someone and that can hurt. Other than that they are great!

 

 
monarch
photo by Charlotte Goodhue
Monarchs “en masse” – or at least a bunch at one time reports Charlotte Goodhue on Roberts Harbor reports…”I've got Monarchs in my milkweed here! Not clouds of them like the 'old' days,

But a few at a time. Early this morning at least 4 all at once.”

diggin' in
photo by Charlotte Goodhue
 

 
 
 
On a personal note, yesterday (8/23) I “bagged” two monarchs in the yard, bring my yearly total into double digits (10!), which is exciting for no other reason than I only saw two last year.

 
male monarch - (the king!)
photo by Charlotte Goodhue

 
 
 
 
 
Pond/field watching has turned a corner with shorter days and receding shorelines.
 


Trolley pond up on Armbrust hill Green Frogs abound! – tons of them along the ponds edge.
 
 


six-spotted phishing spider
 

Leif found this Six-spotted fishing spider (Dolomedes triton) – Family Pisauridae – or the “fishing and nursery web spiders” along the pond’s edge.

 

all fishing spiders carry their egg sacs with the chelicerae until just before hatching” – chelicerae being “mouthparts modified for grasping and piercing”. The spider’s “fangs” if you will.

 
nice sac - that's the egg sac below the female!

Well, we got to see her egg sac first hand – Leif was checking out the spider and touched it (and who can blame him). The spider’s reaction to Leif’s ginormous finger coming at it was to turn upside down in the water. I came by seconds later, saw the upside down spider, and thought I had to save it so I fetched it out of the water. Ended up the spider was fine but I blew its cover. So I took a few shots and let it go. Nice sac. Wish I had taken a photo when it was under water it looked cool.

 
Variable Darner - a mosaic with broken thorax stripes

Mosaic darners (genus Aeshna) are currently “the” dragonflies to see at the pond. As with all insect groups, Mosaic Darners can be tough to identify to species in the field. Getting a photo of the thorax and the two “variably shaped stripes” that run across the thorax can go a long way to tell species. This mosaic in flight has thin thorax stripes that break into 4 spots – this is the Variable Darner (Aeshna interrupta).
Shadow darner - female laying eggs

 
 

Many mosaics “females lay their eggs above waterline in the stalks of emergent vegetation, slicing into the plant with their ovipositor.”  The two thin, straight bands on the thorax (and a few other things) make this a Shadow Darner (Aeshna umbrosa). This Shadow Darner is laying eggs into iris leaves. Take a look at this series of photos as the female uses its ovipositor to slice into the leaves to hide eggs inside. It’s like Easter for dragonflies!

1. nice ovipositor
 
a close up of the ovipositor reveals that it is a pointed, potentially punctureful piece that will poke!
 
 
 
2. ovipositor pokin' - note leaf
shaving peeling off at the 'positor pokes
 
3. getting deeper
 
and yes, the photos have been tilted. for some reason this lets the images look larger.
 
 
 
 
 
 
 
 
 
 
4. fully inserted, the ovipositor will now
place an egg in the slit
her eyes showed no sign of emotions as she
laid her eggs - looks like she's laid a lot too!
all those shavings are from egg laying
 
 
 
 

 
 
 
 
 
 
 
 
 
laurel sphinx moth at the school
 
 
other insects....
speaking of "nice ovipositor"
pelecinid wasp
 
 
female Pelecinid wasps "probe the soil with their long abdomens for the grubs of May beetles - they lay one egg on each grub. The hatching wasp larvae burrow into their hosts to feed internally, killing them". another reason why it sucks to be a grub. 
 
nice tuffs
 
nice tuffs again
Leif spotted this white marked tussock moth caterpillar in the apple tree.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
state beach
 
 
this solitary sandpiper was by itself
 
 
 
 
 
 
 
 
 
 
 
 
 
 
we love the lesser yellowlegs on seaweed
 
 
 
 
 
 
Birds - Shorebirds – state beach continues to be the place on island to see shorebirds...here are some lists - (8/18) - 2 Spotted Sandpipers, 6 lesser yellowlegs, 13 least sandpipers, 13 Ruddy Turnstones, 1 Black-bellied Plover, 1 Semi-palmated Plover, Solitary Sandpiper, Bald Eagle....(8/19) - 5 Semi-palmated Sandpiper, 5 Least Sandpiper, 7 Lesser Yellowlegs, 1 Spotted Sandpiper, 3 Black-bellied Plover, 1 Short-billed Dowitcher...(8/22) 5 Black-bellied Plover, 3 Greater Yellowlegs, 3 Lesser Yellowlegs, 2 Spotted Sandpiper, 5 Purple Sandpiper, 7 Ruddy Turnstones, 5 Least Sandpiper, 1 Semi-palmated Plover, 1 Parasitic Jaeger....(8/23) 11 Black-bellied Plover, 2 Greater Yellowlegs, 4 Lesser Yellowlegs, 5 Least Sandpiper, 5 Ruddy Turnstone, 1 Red-necked Grebe
there are a bunch of ruddy turnstones
on this ledge
 
 
 
Shorebird videos - why do we use videos so much with shorebirds? laziness. I find it hard sometimes to get the shorebirds in focus for  a photo as they move so much. videos focus themselves and for some reason zoom in a little more. anyway. here's some shorebird videos....
 
 
 
 
 
here's some black-bellied plovers doing the ol' classic plover hunting by sight. very robin-like, take a few steps and look, few steps and look, few steps and look...
 
 
 
 
 
 
 
 
 
 
 
 
here's the solitary sandpiper starting to fall asleep
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
here's a pair of least sandpipers picking off the top of the rock weed
 
 
 
 
 
 
 
 
 
 
 
 
 
 
lesser yellowlegs - "floatin"
 
 
 
 
 
 
 
 
 
 
 
 
 
slightly blurry, but still - 2 spotted sandpipers on the rock weed. you can still see the tail waggin' and bobbin' - classic spotted sandpiper
 
 
 
 
 
 
 
 
 
 
 
 
Not shorebirds - Folly Pond - has been good for Black Ducks and Wood ducks, and will continue to be a waterfowl spot for the next few months. Here's a couple of male wood ducks in eclipse/non-breeding plumage
 
 
 
 
 
 
 
 
bald eagle - photo by Banner Moffet
 
other birds....
 
 
shag - photo by Banner Moffet
 
 
 
 
 
 
 
 
 
 
 
common terns are a common sight on ledges
 
 
juvenile common terns are
still very loud
 
 
 
 
 
 
 
 
 
 
 
 
 
nice talons
 photo by Kate Bennard
 
 
 
 
 
 
 
 
 
And another sharpie bites the dust. "window thud"
 
 
Songbirds singing - in the yard this week - Brown Creeper, Parula, Black and White Warbler - singing
 
and with leif its about catch and release
 
 
 
 
 
 
 
looking over the edge