• Avian

NanoTags (Coded VHF) for birds and bats

  • Product Type Icon Tag

Monitor all your birds and bats simultaneously with 0.13g coded radio tags

Lotek supplies the smallest Avian coded VHF NanoTags available to bird researchers today! Enabling researchers to discover migratory movements of the smallest of birds and bats through the Motus network. On a more local scale, these tags can establish the presence and absence of individual animals at points of interest such as communal roosts, breeding colonies or man-made artefacts.

The NanoTag’s field-proven, energy-efficient design delivers a highly stable signal, while its diminutive size and long operational life allow ornithologists to collect data on smaller bird species, over longer periods of time, than ever before.


  • The smallest NanoTag is the NanoPin
  • Solar NanoTags are now available
  • Extend tag life of smaller NanoTags with on/off cycles.
  • Product Features

    Coded signals
    Employing Lotek’s unique coded transmitter technology, these tags allow you to track and identify hundreds of individuals on a single frequency. This reduces the probability of missing individuals due to listening on a different frequency. Designed for use with Lotek digitally encoded receivers, such as the SRX 1200.

    Infrared activation and deactivation
    Eliminates need for magnet removal or attachment during field sessions.

    Long life
    NTQB2s allow you to track for even longer than previous versions with the possibility to track for a year with a sub-gram tag.

    A variety of options available to extend operational life with on/off cycles.


  • Product Applications

    Great for:

    • Flyway Studies – automated logging of birds or bats flying through area
    • Migration Stopover Ecology – record when your tagged animals are present
    • Colony Nesting Studies – log all parental feeding visits automatically
    • Flight Searches – save time while searching by only listening to one frequency
    • Bat Roost Behaviour – detect Bats leaving and returning to a roost

    Avian NanoTag-series transmitters are ideally suited for studies involving passerines, bats, water birds and other species that require small, long-life transmitters and the ability to detect multiple individuals occupying the same area.

    The most common use of Avian NanoTags is studying migration and stopover ecology using the Motus Wildlife Tracking System, which has led to some exciting discoveries about the timing of migration, the speed birds migrate and the routes they take.

    Other more localised studies include recording presence absence at roosting sites, recording feeding events at seabird colonies and looking at social networks by seeing who is visiting the same site at the same time. There are many other possible studies when you want to know when an animal is at a particular site.

    Dragonflies with tiny fanny packs show migration patterns in new study

    Hidden Long-Distance Movements by a Migratory Bird

    Credit to Nathan W. Cooper and Peter P. Marra

  • Product Specifications

    Model Weight [1] (g) Size [1] (LxWxH)
    Expected life (days)
    3s interval 7s interval 13s interval 29s interval
    NTQB2-1 0.28 11 x 5 x 3 19 39 63 103
    NTQB2-2 0.32 11 x 5 x 4 29 60 97 159
    NTQB2-5-1 0.46 11 x 5 x 4 53 111 178 291
    NTQB2-3-2 0.68 12 x 6 x 5 67 140 224 367
    NTQB2-4-2 1.0 12 x 8 x 8 134 280 449 735
    NTQB2-6-1 1.7 14 x 9 x 7 190 397 636 1042
    NTQB2-6-2 4.0 23 x 9 x 7 359 749 1203 1969
    NTQB2-9-2 12.4 43 x 20 x 12 612 1599 2566 4202

    1. Stated weight may vary by ±5% for standard packaging. Antenna or harness tube selections will increase size and weight.
    Contact Lotek for more information

    Features and specifications subject to change without notice.

    For tags weighing less than 0.26g, please contact one of our Telemetry Specialists about our NanoPin.


    Technical specifications:
    Operating temperature: 0˚C – +35˚C
    Coded tags require receivers that can decode the signals to tell you which individual has been detected.
    They are best used with our SRX receivers:
    SRX 1200-D: Suitably robust to be left in the field for long periods
    SRX 1200-MD: Appropriate for manual tracking of tags as well as for a logging station

  • Product Downloads

Next Steps

Get in Touch about NanoTags (Coded VHF) for birds and bats

Contact Us
  • By submitting this message you are agreeing to Lotek’s Privacy Policy, and we will handle your contact details as described in this policy. If you prefer not to receive marketing emails from Lotek about our products and services, you can opt-out of all marketing communications at any time.