An online resource based on the award-winning nature guide

Snakes

Ring-necked Snakes Laying Eggs

7-11-14 ring-necked snake 188Adult Ring-necked Snakes measure one to two feet from the tip of their nose to the tip of their tail. Named for the yellow/orange ring around their neck, they also have brilliant orange scales on their belly. This snake is fairly common throughout all of New England except for the northernmost part of Maine, but not often seen due to its nocturnal habits and secretive nature. The three or four eggs that female Ring-necked Snakes lay in late June and July are deposited in and under rotting logs and stones. Several females have been known to use the same nest. The eggs hatch in late August or September and the young snakes feed on the same prey as adults — small toads, frogs, salamanders, earthworms, smaller snakes, insects and grubs.

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


What a Snake’s Eyes Can Tell You

8-5-13  snake eyesYou can tell a lot about a snake just by looking at its eyes. Snakes that burrow underground usually have relatively small eyes compared to those that live above ground. The size of the eye and the shape of the pupil can often tell you if the snake is diurnal or nocturnal – typically diurnal snakes have comparatively small eyes with round pupils and nocturnal snakes have larger eyes with elliptical pupils. Both of these characteristics have to do with maximizing or minimizing the amount of light that enters the eyes. The larger the eye, the more light it can gather. The reason for the difference in pupil shape is that round pupils can close very tightly, to a pinpoint opening, shutting out bright sunlight very effectively. Elliptical pupils can open wider than round pupils, and consequently collect more light. (Photo is of a Common Gartersnake.)

Naturally Curious is supported by donations. If you choose to contribute, you may go to http://www.naturallycuriouswithmaryholland.wordpress.com and click on the yellow “donate” button.


Downy Rattlesnake Plantain Flowering

8-20-13 downy rattlesnake plantain 095Downy Rattlesnake Plantain (Goodyera pubescens) is an evergreen plant (each leaf lives for about four years) belonging to the Orchid family. It has broad, rounded leaves (like plantain) that bear a design somewhat reminiscent of snake skin. For the latter reason, it was used by Native Americans to treat snakebites. Botanists think it must have been used on bites from non-poisonous snakes, for medicinally it does not cure a venomous snake bite. This is the most common species of rattlesnake-plantain in New England, and can be identified easily by the broad central stripe down the middle of each leaf. At this time of year its tall flower stalk is bedecked with tiny, delicate, white orchids, each the size of a baby finger nail, which are well worth examining through a hand lens.


Snake Jaws

garter snake with treefrog by Tom Nevins IMG_0030In this photograph taken by Tom Nevins, a Common Gartersnake is swallowing prey — a Gray Treefrog — that is much larger than the snake’s mouth. It can do this because of the structure of its jaws. The quadrate bone, which attaches the upper and lower mandibles, is not rigidly attached. Rather, it pivots, allowing vertical and horizontal rotation of the jaw. In addition, the two pieces of the lower jaw (left and right) are connected in the front of the jaw by an elastic ligament, allowing each side of the lower jaw to move independently. Due to these adaptations, a snake can consume large prey by basically walking over it with its jaws.


New Children’s Book by Mary Holland

FerdinandFoxCover PhotoDo you know a 3 – 8 year old who loves animals and would enjoy getting close-up views of the antics of a red fox kit during the first summer of his life? My second children’s book, Ferdinand Fox’s First Summer, has just been published by Sylvan Dell in both hardback and paperback. I have been lucky enough to have had the opportunity to observe and photograph young red foxes as they interact with each other and with their parents. This book consists of a selection of these photographs, accompanied by text and an educational component at the end of the book. Look for Ferdinand Fox’s First Summer in your local bookstore. If they don’t carry it, you would be doing me a huge favor by asking them to. Thank you so much. My next children’s book is on Beavers and will be coming out in the spring of 2014. (I am still looking for a publisher for Naturally Curious Kids!)


A Great Christmas Present!

If you’re looking for a present for someone that will be used year round, year after year, Naturally Curious may just fit the bill.  A relative, a friend, your child’s school teacher – it’s the gift that keeps on giving to both young and old!

One reader wrote, “This is a unique book as far as I know. I have several naturalists’ books covering Vermont and the Northeast, and have seen nothing of this breadth, covered to this depth. So much interesting information about birds, amphibians, mammals, insects, plants. This would be useful to those in the mid-Atlantic, New York, and even wider geographic regions. The author gives a month-by-month look at what’s going on in the natural world, and so much of the information would simply be moved forward or back a month in other regions, but would still be relevant because of the wide overlap of species. Very readable. Couldn’t put it down. I consider myself pretty knowledgeable about the natural world, but there was much that was new to me in this book. I would have loved to have this to use as a text when I was teaching. Suitable for a wide range of ages.”

In a recent email to me a parent wrote, “Naturally Curious is our five year old’s unqualified f-a-v-o-r-I-t-e  book. He spends hours regularly returning to it to study it’s vivid pictures and have us read to him about all the different creatures. It is a ‘must have’ for any family with children living in New England…or for anyone that simply shares a love of the outdoors.”

I am a firm believer in fostering a love of nature in young children – the younger the better — but I admit that when I wrote Naturally Curious, I was writing it with adults in mind. It delights me no end to know that children don’t even need a grown-up middleman to enjoy it!


Common Gartersnakes Basking

This is the time of year when snakes take advantage of sunny, mild days by basking in the sun and warming their bodies.  It’s possible to come across basking Common Gartersnakes as late as November, as they are more cold tolerant than many species of snakes.  All too soon, however, they will be retreating into their hibernacula (hibernation site), where they are protected from severe cold (being ectothermic, snakes cannot control their body temperature).   To further protect them, a high level of glucose acts as antifreeze in snakes.  The ideal hibernaculum not only serves as a temperature buffer, but also conceals its occupant from potential predators, permits gas exchange, and prevents excessive desiccation.  Rock crevices, abandoned woodchuck burrows, rotting tree stumps and old foundations are favorite hibernacula for snakes and other hibernating animals.  Gartersnakes typically overwinter in groups, and some even share their hibernacula with other species of snakes, including Smooth Greensnakes, Ring-necked Snakes and Red-bellied Snakes.


Northern Watersnake

Northern Watersnakes can be found in rivers, ponds and bogs throughout New England, except for northern Vermont, New Hampshire and Maine.  They spend time foraging both day and night for fish (61% of diet), frogs and toads (21%), salamanders (12%) as well as insects and crayfish at the water’s edge.  (Snake jaws can separate at both the front and back, allowing them to eat impossibly large prey , such as the  catfish in Chris Crowley’s photograph.) They also spend a great deal of time basking on rocks and overhanging branches.  Northern Watersnakes can be formidable looking – they can grow over four feet long – but while they can be aggressive if threatened, they are not poisonous.  Watersnakes give birth to up to 70 (typically 20-40) live young between August and early October.


Snake Eyes

You can often tell whether a snake is active in the day (diurnal) or during the night (nocturnal) by looking at its eyes. Diurnal snakes, such as the pictured Common Gartersnake, typically have round pupils and moderate-sized eyes. Many nocturnal snakes have large eyes and many also have vertical, elliptical pupils. A round pupil is able to close tightly to a pinpoint opening, allowing a minimum amount of light to enter the eye on very bright days. In contrast, a vertical pupil can open wider than a round pupil to allow more light to enter the eye, a useful adaptation for night vision.


How Snakes Smell

Many snakes, including this Common Gartersnake, use smell to track their prey.  In the roof of a snake’s mouth are two openings, called the vomeronasal  organ, also known as Jacobson’s organ.  Snakes smell by sticking their forked tongue in the air, keeping it constantly moving while they collect particles (mostly pheromones) on it from the ground, air and water.  Next they pull their tongue back into their mouth and insert it into their Jacobson’s organ (one fork in each opening).  Then the particles are analyzed and the snake determines whether prey or a predator is in the vicinity.  


Common Gartersnake Pigments

12-8-10      Common Gartersnake

The Common Gartersnake (Thamnophis sirtalis) is New England’s most common and widespread snake.  It’s not unusual to find one that has been run over on the road, but rarely have I found a carcass of one in the woods, especially this late in the year.  Gartersnakes usually are hibernating (often in groups) in rock crevices, rotting logs or holes dug by mammals by October or so.  The warmer-than-usual fall certainly allowed for extended basking in the sun and the ability to find active earthworms later in the season.   If you look closely you may see that this gartersnake has a blue tinge where it’s normally a greenish color. Yellow and blue pigments in a snake’s skin fuse to produce the green color in living snakes. After death, the yellow pigment breaks down very quickly, whereas the blue pigment is more stable and remains much longer. Gartersnakes that have been dead for a while can have bright blue dorsal and lateral stripes.  


Naturally Curious wins National Outdoor Book Award

I am delighted to be able to tell you that this morning I learned that NATURALLY CURIOUS won the Nature Guidebook category of the 2011 National Outdoor Book Awards.  I’m honored and humbled by this recognition.   http://www.noba-web.org/books11.htm


Common Gartersnakes Giving Birth

Most species of snakes lay eggs (oviparous), but some give birth to live young (viviparous), including the common gartersnake (Thamnophis sirtalis).  Gartersnakes are born at this time of year, and are on their own from the moment of birth.  The greatest number of gartersnakes to be born in a single litter is 98, but 14 – 40 is more typical.  The common gartersnake in the accompanying photograph is a newborn, measuring 6 inches in length.


Follow

Get every new post delivered to your Inbox.

Join 2,700 other followers