Hej,
We have been using elastic cord: https://www.cchobby.com/catalog/product/view/id/31984/s/elastic-beading-cord-1-mm-black-25-m-1-roll/
The one with a 1 mm diameter usually lasts for about a year before it falls off (though there is quite some variation, from about 8 month to 20 month).
I have used once a thinner version (I think 0.5 mm) and that lasted much shorter. Unfortunately I don’t remember anymore for how long. It might be quite a good shot if you aim for 4-5 month.
Best wishes
Arne
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The Motus Wildlife Tracking System (Motus) is an international collaborative research network that uses coordinated automated radio telemetry to facilitate research and education on the ecology and conservation of migratory animals. Motus is a program of Birds
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Does anybody have recommendations for leg-loop harness materials that would last 4 months or so but not last a full year? Most of the descriptions I'm seeing in the literature are geared toward short-term (a few weeks) radio tags or long-term geolocators, but not much for intermediate time periods. We're looking for harness materials that would last the breeding season and through fall migration (about 120 days) but then have a good chance of dropping the transmitter over the winter. Thanks.
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