Search This Blog

Showing posts with label ʻIwa. Show all posts
Showing posts with label ʻIwa. Show all posts

Monday, November 7, 2011

Lānaʻi High School Students "Sail" to Tern Island


Tern Island is probably about 600 miles away from Lānaʻi High School, which is close to the southeastern end of the Hawaiian Islands archipelago.  On Tuesday, October 18th the two locations seemed a little closer to each other.

On that day 21 high school juniors & seniors and their teacher made a "virtual field trip" to Tern Island, with Barb Mayer (USFWS volunteer) and Wes Byers (NOAA's Outreach Specialist for the Papahānaumokuākea Marine National Monument).

The virtual field trip to far-away Tern was made possible through a Powerpoint presentation, utilizing photos and this real-life video "The Searcher Departs from Honolulu":



After "setting sail" on the Searcher, the students imagined voyaging for 3 days to reach Tern Island where they were to start work as wildlife volunteers.  Therefore, at the conclusion of the Powerpoint, students were put to work in the classroom!  They were divided into small groups and rotated through several activities utilizing artifacts from Tern.

For example, here's an activity featuring actual marine animal eggs.  (They were infertile; they didn't hatch.  Therefore, it's possible for the US Fish and Wildlife Service to use them for education.  The eggs have been filled with plaster of paris, to strengthen them against accidental breakage.)


Most of the eggs are labeled with their birds' identifying, 4-letter code; two are not...or three, since you can't see the whole code for the egg on the right.  

Egg Challenge:  Of those three, which one belongs to the Laysan Albatross, Mōlī?  Which is the store-bought chicken egg?  ...and which one belongs to the Hawaiian Green Sea Turtle, Honu?  (Hint: reptile eggs don't have [much] calcium in them).  Honor system: don't peek until you're ready, but the answers are at the end of this post.


THAT can't be a Laysan Albatross, a Mōlī?!  Your're right; it's a stuffed toy.  Imagine how much bigger the REAL albatross parents are who laid this egg?


JMacaulay took this picture of a pair of adult Mōlī.

 Here's an activity about the Great Frigatebird's wingspan-->

Challenge: Place the Great Frigatebird (GRFR; ʻIwa) skeleton and both sets of wing bones in the proper places to represent a living bird's actual wingspan!

The students have put the GRFR skeleton in the middle of the 7' long fabric strip.  Now, can they correctly arrange the wing bones?

YES THEY CAN!  The answer sheet, which was hidden under a paper taped to the classroom's front board, confirmed their effort.  Wow, that ʻiwa has a chicken-size body and a hang-glider wingspan!
Back at the end of May "A Busy Time at Kānemilohaʻi" was posted.  Mark Sullivan's photo shows a particularly disturbing example of a Honu with marine debris, a porthole, around its neck:
Here's the porthole again.  Now it's being used to help students make the mind and heart connection to what marine debris actually does to life in the ocean. 

How does it feel to be caught in marine debris? Well, how does it feel to have this rubber band around your hand?!

The class period ended with everyone feeling a little closer to Tern Island Field Station and the Papahānaumokuākea Marine National Monument.  Barb and Wes look forward to "bringing the place to the people" in other classrooms around the state of Hawaiʻi!
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Egg Challenge Answers:
  • Laysan Albatross -- the BIG one on the right
  • Chicken -- in the top-right corner of the egg carton
  • Hawaiian Green Sea Turtle -- bottom-left in the carton

Wednesday, September 7, 2011

A calm day on Tern

September 6, 2011: For the first time since I arrived to Tern almost 3 months ago, it is still. The Northeast tradewinds, normally a constant presence at the atoll, are almost entirely absent. Without even the slightest breeze, it's oddly quiet today. Not only do we not hear the sound of the wind moving between antennas and solar panels on the roof, but the sound of waves crashing against the shore south of the barracks is absent. The waters outside the lagoon are glass calm and a more subtle shade of blue than we usually see.

The birds have also quieted down substantially and it feels a little eerie out in the colonies. Everybody's laying low because it's HOT out there. Gular sacs are all aflutter (at least among the boobies and frigate birds), the sooty tern flocks are in disarray without a steady wind to orient themselves by, and everybody else has flocked, literally (bad pun fully intended), to any available shade.

With Tern Island's shrub habitat in decline and roughly 30% of the island taken up by a barren expanse of compacted gravel that does not support native plants (and therefore most of our bird species), shade is at quite a premium on Tern Island. Lucky for the birds, most of the chicks are past their most vulnerable stages in their lives when they lack the physical and behavioral adaptations to handle the heat. Here are a few examples of how Tern's seabirds coped with today's high temperatures.

Frigatebirds (ʻIwa) display perhaps the most diverse (and amusing) range of behavioral responses to heat. Here are just a few of them. There's the open wing posture (apparently this reduces water loss somehow). There's gular fluttering (intensity and duration of flutter typically correlates to how heat stressed a bird is), which really requires video footage for one to fully appreciate (stay posted on this one). And then there's what I've decided to call the 'I give up' posture. C'mon, it's not that hot, is it?


Scott has been steadily amassing a pretty sweet driftwood collection for his study plot in our Active Management Revegetation Zone between the runway and the colonies. Birds are attracted to the wood every day for the perching structure it provides, but today saw especially high interest in Scott's installations for the shade they provide.

When there's a steady wind (which is most of the time) all the sooty terns (ʻewaʻewa) in a flock like this will almost invariably be pointing straight into the wind. Seriously, on a windy day these birds are as effective as any windsock in indicating the wind direction. This is another behavioral response that helps them stay cool. I imagine it also keeps the feathers nice and smooth. You'll see from this photo, however, that on a dead calm day like today nobody quite knew where to stand! A minor detail, I know, but when you share a small island with thousands of seabirds, you notice things like this.

This little dome thing here is a recycled fuel barrel being used as a shade structure. We painted it white so it will reflect heat, drilled a few holes in the sides for cross-ventilation, and then anchored it to the ground. We're still in the early stages with these designs and if you look closely, you'll see a little gizmo on the ground that looks like a thumb drive. This is a temperature logger. We are currently measuring the inside temperature of our shade structures and comparing them to the temperatures under our natural shrub habitat. If these perform similarly, we'll make more and place them out in the colonies in time for the next breeding season.

Even a simple concrete block out on the runway surface makes a difference. We're still not quite sure how this tiny brown noddy (noio) chick made it way out there, but it looks like it's been reunited with its parents and managed to find a good spot to wait out the heat!


Monday, May 2, 2011

Seals and Birds

ʻIlio o ke kai (Hawaiian monk seal).  Photo taken by FWS Volunteer Kristina Dickson while snorkeling.

NMFS seal staff Shawn Farry pushes the boat off from a small outer island in the atoll.  Photo by Kristina Dickson.
FWS Volunteers band their 100th albatross chick today -- KZ00 (ʻCuzcoʻ)!  From left to right:  Kristina Dickson, Sarah Youngren, Lindsey Kramer, James Macaulay, and Dan Rapp.  Photo by Curt Youngren.

FWS volunteers gather about 750 lbs of marine debris from East Island.  Clockwise from left:  Dan Rapp, Paula Hartzell, Jimmy Macaulay, Kristina Dickson and Lindsey Kramer.  Photo by Sarah Youngren.

Kristina Dickson dives through the La Perouse cave.  Photo by Mark Sullivan.
Runway chick:  One of several chicks who have made their home in the runway.  We don't have flights in the summer because of so many sooty terns, or we'd have to move these guys out of the way.
cloud of sooty terns
Exercising around the sooty terns can be a bit of a challenge...as Curt Youngren demonstrates.

James Macaulay and Kristina Dickson band a red-tailed tropicbird.
Dan really DOES have birds on his brain.  Sarah shaves a bird in Dan Rapp's hair.  (Ah, social life on a remote island...)
NMFS staff Mark Sullivan prepares for tagging a seal -- Those are seal tags on the rim of his hat, while he prepares antiseptic and gloves.  Photo by Kristina Dickson.
Let's play the stick game!  This young ʻiwa would buzz me ceaselessly until I offered him my camera as sacrifice.  Photo by Paula Hartzell.
A love tern brings some edible affection for its chick.  Photo by Mark Sullivan.
Quiet time on Tern... Dan Rapp enjoys some moments of solitude during the daily entrapment walk around the island.  Photo by Sarah Youngren.

Sunday, January 23, 2011

Random photos from Tern Island This Week

Aloha kakou!  Instead of the usual diatribe, thought I'd try some random photos of the week.

Bhuddabird.  (No, its not hurt.  That's how frigatebirds cool off.)


No one can relax like a frigatebird.  Seriously.

Teamwork is essential to success on a remote island....The Well Oiled Machine (video)


And finally, some pretty marine debris.  (This one is for you, Chedi and Jon!)

Friday, November 12, 2010

Volunteers on Tern

From Keith Burnett, Volunteer on Tern since June 2010:

Having the opportunity to volunteer here on Tern Island and be a guest of the seabirds in their own home - away from most human influence - has been a real blessing.  Every morning before work I have the opportunity to walk down the runway to the East end of the island, enjoy the sunrise and see all the birds during the time they are most active.  It never ceases to put a smile on my face to be able to share the same space with thousands of birds who are more concerned with themselves than me as a human, and every day I see a new behavior, or perhaps even the same behavior that makes me laugh and view these birds as individuals and part of their own society.  Each bush, even, has its own story to tell with the chicks that have grown up and the adults that return to the same places each year.  This photograph is a nice diverse representation of most of the birds on the island and how they interact with their surroundings including Masked Boobys, Red-Footed Boobys, Brown and Black Noddys, Black-Footed Albatross, and Great Frigatebirds.  The only other seabird species not represented here that are regulars at Tern are the Sooty Terns and Laysan Albatross (who have left the island to feed and will return to breed) and the White Tern.


View of Tern Island Wildlife, Photo by Keith Burnett (FWS Volunteer)


The following is from Kristina Dickson, who will be heading out to Tern in December:

Hi, my name is Kristina Dickson and I am from Covington, LA.  I look forward to being one of the interns at Tern Island for the next 7 months. I am a 2009 graduate of Louisiana State University with a degree in Biology. I spent a year studying marine biology at the University of Hawaii at Manoa, which sparked my interest in marine mammal and seabird research.  Since graduating I have volunteered at the New Orleans Aquarium of the Americas as a naturalist guide, interpreting animal behaviors and working to provide educational information about the exhibits to visitors. I have always loved the water and enjoyed swimming.  I swam competitively for 10 years and now enjoy applying my swimming ability to other water sports such as scuba diving, surfing, body boarding, and water polo. My overall goal while volunteering at Tern Island is to get more hands on experience in the marine science field and to make a contribution to the work being conducted out there. I look forward to learning more about marine mammals and seabirds, and I am excited to be able to see these animals living in an unspoiled habitat.  Living on a remote island is not something many people have the opportunity to experience and I hope to make the most of my time out on Tern Island. I am looking forward to joining the volunteer team on Tern Island and I hope that I can make a positive contribution to the program out there.

Kristina Dickson, Volunteering on Tern Dec 2010-June 2011.

Popular Posts