Humpback Whale Calf Summary: 2010

Finally!!!

I’m a few months behind schedule…but I’ve just spent a week with my head buried in my computer, on the verge of crying at times finished looking through the reams of data we collected during the humpback whale season in Tonga last year, and I’ve compiled the following PDF summary:

Summary of humpback whale calfs: 2010, v1 (22 Jan ’11)
Summary of humpback whale calfs: 2010, v2 (08 Oct ’11, added sighting of Ikumi 201005)

The file is 37 pages long and about 12MB, incorporating 24 juvenile humpback whales that we were able to ID during the 2010 season.


Ikumi, fifth ID-ed calf and the star of the 2010 humpback whale season in Tonga

I know that downloading and reading a PDF file is kind of a pain, but I think it’s worth investing a bit of time to do so.

With three consecutive years of documentation, there are some interesting patterns beginning to emerge from the data. Only time will tell whether the trends continue, but it’s certainly rewarding to see results from the time and effort we’ve put in.

To give you an idea of where our encounters took place, here’s a map of our calf sightings:


View 2010 Humpback Whale Calf IDs Tonga in a larger map

And this is a map of calfs we saw, but were unable to ID:


View 2010 Unidentified Humpback Whale Calfs Tonga in a larger map

If you click through to the larger maps, you can read notes about each of the encounters. I think it’s particularly interesting to look at the repeat sightings of 201005 Ikumi (the friendly female calf we encountered 10 times in 15 days) to see where she and her mother spent their time.

As was the case with the calf summary I put together for 2009, I will happily incorporate contributions from anyone who was in Tonga last year and can send me photo and/ or video documentation of:

  1. Additional sightings of any of the 24 juvenile whales already ID-ed;
  2. and/ or

  3. Sightings of baby whales not in my file.

The more contributions there are, the better understanding we can develop of the whales. For the 2009 season, submissions from other people eventually increased our ID count from 26 to 31 baby whales.

To everyone who contacted me earlier…sorry it’s taken this long to get organised! I don’t have any help putting this together, so it’s taken longer than I had hoped.

In case you’re interested, you can click the following links for information from the 2008 and 2009 seasons:

Summary of humpback whale calfs: 2008 (17 Sep ’08) 8MB;
Summary of humpback whale calfs: 2009, v6 (08 Oct ’11) 15MB;
Google Maps for 2009 calf sightings.

And finally, there are a few spaces that might be opening up for my trips to Tonga this year. If you’re interested, take a look at my previous post, and then drop me a line via my contact form.

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  • http://www.atlasomega.com tang

    Tony, what a huge amount of work you have put into this. Amazing to see it all synthesized into a single document. Congratulations and thanks for doing this.

  • http://www.tonywublog.com/ Tony Wu

    Thanks Calvin!

    Cheers,

    Tony

  • Ron Silver

    Tony,

    This is a lot of information that could be very useful for species management/habitat conservation purposes. I am aware of others ‘sponsoring’ whale watching trips to Tonga, such as Seacology, utilizing NAI’A. Is there any governmental office or environmental organization that is willing to collate all of your (and others) information on humpback whales?

    Ron

  • http://www.tonywublog.com/ Tony Wu

    Hi Ron,

    Not that I’m aware of

    Cheers,

    Tony

  • Flukematcher

    Tony g-na (Gina) from flickr linked me here. You may have gotten my post on flickr but just in case and sorry if I repeat myself:

    I work as a flukematcher for Allied Whale and was excited to find many excellent photos like yours on flickr that would be very helpful to us.

    Allied Whale has maintained a catalog for North Atlantic Humpback whales since the late 1970′s. As a result we’ve learned a lot about how they use their habitat (their travels from feeding to breeding grounds) as well as the life histories of individuals (there are known grandmothers!)

    Here is a link to read more about Allied whale
    http://www.coa.edu/html/nahc.htm

    Allied Whale is now involved in an effort to do the same for the Southern Ocean…. trying to understand the movement from feeding to breeding grounds in a much larger ocean! And because these whales are beginning to be hunted again in their feeding grounds this effort takes on greater urgency.

    http://home.coa.edu/Filemaker%20Pro%204.0%20folder/web/alliedwhale/

    If you are willing, we would take your photo through the catalog (which contains about 3000 individuals) ….. if no match is found then a second person would take it through, it would be given a number and would be a new member of the catalog. If we were able to find a match, great excitement would ensue! In either case we would let you know.

    If you are willing to contribute your photo to the catalog let me know and I can give you suggestions about cropping and the size that is most useful to us.

    Please let me know if you have any questions and I hope you will be interested in contributing to this effort, your photo could prove very useful. Thanks
    Gale

    P.S. Last spring (2010) Flickr provided us with a very exciting match! You can read about it here:

    http://www.flickr.com/photos/yeimaya/5080456381/

  • http://www.tonywublog.com/ Tony Wu

    Hi Gale,

    Thanks for your message. I saw the news about the fluke match previously. Congratulations!

    I don’t photograph flukes specifically. For the calf IDs, I concentrate on photos of the whales’ entire bodies, and any unique characteristics the individuals might have. If the fluke is particularly noteworthy, I’ll try to get fluke images for ID purposes.

    I’m happy to forward fluke photos to you whenever I have any. Please let me know if you find any matches among my calf IDs!

    Cheers,

    Tony