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Brown Tree Snake

The introduction of the brown treesnake to the Territory of Guam has caused significant ecological, economic, and human health impacts. Priorities of the Pacific Islands Fish and Wildlife Office Invasive Species Program are to prevent the introduction of the brown treesnake to other Pacific islands and to control the snake population on Guam.

  • What We Do

    Invasive Species Program staff provide coordination for multi-agency brown treesnake control efforts, regionally and nationally, through the legislatively mandated Brown Treesnake Working Group. One staff member is stationed in the Commonwealth of the Northern Mariana Islands (CNMI) within the Division of Fish and Wildlife dedicated to brown treesnake issues. The other position is located within the PIFWO office in Honolulu, Hawaii.

    These positions are partially or fully funded by the Department of Interior’s Office of Insular Affairs and managed through a cooperative agreement between the CNMI Division of Fish and Wildlife and the Pacific Islands Fish and Wildlife Office.


    Upcoming Events

    Brown Treesnake Technical Working Group 2019 Annual Meeting Announcement

    Aloha, Hafa Adai, Tirow and Hello!

    On behalf of the Brown Treesnake Technical Working Group (BTS TWG), we would like to invite you to attend the annual meeting of the BTS TWG at the Fiesta Hotel, Garapan, Saipan, 20 - 21 November 2019.

    Day 1: BTS Science Presentations and Annual Agency Updates
    Wednesday, 20 November, 2019
    Location - Hibiscus Room: Fiesta Hotel, Garapan, Saipan 

    Day one of the meeting is in the large group open format. Anyone working or interested in BTS issues on Saipan, Guam, Hawaii, or other insular areas is welcome to attend including students and the general public. The meeting will consist of research presentations and agency updates, covering a wide range of topics related to BTS management.

    If you plan to attend, please RSVP here.

    We are now seeking speakers who wish to present their research findings, program or project overviews, mitigation efforts, operational challenges, risk analyses or other BTS management topics during the large-group meeting session. Posters are also welcome. Abstract submission for presentations or posters are due 10 September 2019. 

    Click here to submit an abstract.

    Day 2: BTS Technical Working Group Business Meeting
    Thursday, 21 November, 2019
    Location - Azucena Room: Fiesta Hotel, Garapan, Saipan

    The second day will be a business meeting of the TWG, attended by invited Commonwealth, Territorial, state and federal agency representatives. The business meeting will include invited panel presentations and discussions on topics related to any of the following:

    (1) BTS management and research priorities/needs, and future directions;

    (2) information needed by funding agencies;

    (3) and other topics identified by BTSTWG members. 

    We are actively soliciting agenda topics for the business meeting and panel discussions. If you would like to submit an agenda request, have questions or require additional information, please contact MJ Mazurek, USFWS Brown Treesnake Coordinator, at  Meeting agendas will be available by 10 October 2019. 

    Please note the Marianas Terrestrial Conservation Conference and Workshop (MTCC) will be held on Tuesday 19, November 2019, also in the Hibiscus Room, Fiesta Hotel. This year all BTS oriented presentations will be part of the TWG on Wednesday 20, November. For information about the MTCC visit

    Mahalo! Olomwaay! Si Yu’us Ma’ase! Thank you!

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