The recent use of abdominally-implanted satellite transmitters to track movements of waterfowl is rapidly filling gaps in our understanding of their population structure and affinities. However, premature loss of transmitter signals is of serious concern. Such loss occurred in 21 out of 25 satellite transmitters implanted in Harlequin Ducks (Histrionicus histrionicus) in 1996-1998. The tracking of eight birds captured while migrating along the shores of Forillon National Park, Gaspé Peninsula, Québec, and the resightings of some of these birds after transmitter failure is detailed. The birds were followed for three to 373 d (mean = 127 d, SD = 82 d) until transmitter signal was lost, but four birds were resighted 493 to 1,474 d after the surgical procedures. These results indicate that premature failure of the transmitter is a common cause of signal loss, even when the battery voltage is adequate at the time of loss. Harlequin Ducks drakes implanted with satellite radios are able to live long after the transmitter has failed.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 31 • No. sp2