Posts Tagged ‘hatchlings’

Tracking Terrapin Hatchlings

Friday, September 5th, 2008

Where do hatchlings go once they flee the nest? Using various methods of inference and observation, we have determined that some hatchlings race to the wrack line for safety, others scramble further into the salt marsh grasses and still others opt to remain upland for at least the first winter of their “hidden” years.

Terrapin Hatchling Track Heads Down Turtle Pass Dune

Let’s follow some clues, some tracks and some hatchlings to test these hypotheses.  The high dune of Turtle Pass seems the place to start as we discover a hatchling track descending from an emergence nest atop the dune and heading seaward.

Tracks Assume Colorful Tints as Sun Dances Behind Clouds

Down we go along the shifting slope that morphs in shape and color as shadows dance through the contours of the dune.

Close-Up with Tail Mark Bisecting Track

Let’s experience the descent as though we were a newborn hatchling on its first ski run down the slopes.

Follow Tracks to Hatchling Buried in Salt Marsh Wrack

So, our first experiment leads to the discovery of a hatchling burrowed into the landward edge of the wrack line, buried under last winter’s deposit of salt hay.

But our day isn’t over as we encounter another set of hatchlings scaling the bearberry covered banks off 5th Avenue and passing through an exquisite clump of sea lavender en route to safety.

Terrapin Hatchling Scrambles to Reach Salt Marsh

These little critters eschew the wrack line, which to them seems like a clear cut jungle of logs, and head directly into the thick matting of Spartina patens in the salt marsh system separating east and west sections of Lieutenant Island.

Eastern Box Turtle Hatchlings

Wednesday, September 3rd, 2008
Gardening can yield some unusual crops. A resident of Paine Hollow in South Wellfleet was clearing the plantings around her cottage when she discovered a hole in the mulch covered bed. At the bottom, four perfectly healthy, but grumpy Eastern box turtle hatchlings were hunkered down for an overcast, windy and raw September day. 

Four Eastern Box Turtle Hatchlings

They seem small … that is, until you compare them to diamondback terrapin hatchlings that emerged a short distance away.

DBT & EBT Size Comparison

Comparison of Terrapin (Left) & Box Turtle (Right) Hatchlings

These hatchlings were discovered at the edge of conservation land, the Whale Bone Trail, that I had assesssed last fall as prime Eastern box turtle habitat.  What a beautiful way to have your assessment confirmed!

Eastern Box Turtle Hatchling Close-Up

Peek Inside the Egg Chamber

Tuesday, September 2nd, 2008

Like a clenched fist deep inside a carefully carved terrapin nest lies the egg chamber where the female has deposited her clutch 75 days earlier. When the clock chimes “emergence,” hatchlings squirm and wiggle their way free of their siblings to begin their dash for survival.  Today at noon the alarm rang for Nest 280 on the high dune of Turtle Point on Lieutenant Island.  Count noses, count eyes, count limbs as hatchlings get ready to sprint for freedom.

Hatchling Bunched Tightly in Egg Chamber

Flying Insect Ovipositing on Terrapin Nesting Dune

Monday, August 25th, 2008

Voracious and aggressive predators of just pipped diamondback terrapin hatchlings are insect maggots. A large percentage of terrapin nests are invaded by these maggots that destroy hatchlings before they can ever emerge. We have identified at least one species of these maggots. On Monday, 25 August, I observed this flying insect inspecting the tracks of recently emerged hatchlings and then ovipositing immediately atop these tracks on the terrapin nesting dune at Turtle Pass.

Wasp-Like Insect Ovipositing on Turtle Pass Dune

Run for Your Life

Sunday, August 24th, 2008

As tiny, defenseless, 1-inch, quarter ounce hatchlings emerge, their only hope for survival is a mad dash from exposed sandy dunes to the cover of vegetation and the nursery salt marsh.

Terrapin Hatchling Runs for Its Life