Last pic of Top Flat chick taken 22 September 2024. Image credit, DOC.[/img]
Top Flat Track chick fledged at 233 days of age.https://www.doc.govt.nz/nature/native-animals/birds/birds-a-z/albatrosses/royal-albatross-toroa/royal-cam/track-the-chicks-weight/Top Flat Track chick at Observation Post, 5 days prior to fledging.
No longer chicks, the toroa that have fledged are now juveniles and will become adolescents once they return to Pukekura in about 5 years’ time. Around a third of them have fledged now. One has been rescued by DOC, Royal Albatross Centre and Port to Port staff and later fledged successfully.
Tracking tags via crowd funding
The generous crowd funding on the Royal Albatross Centre give-a-little page has provided funds for the expensive GPS tags to be attached to 7 of the remaining chicks.
A big THANKYOU to all who donated!
Unlike the smaller, longer life, GLS tags, the data will be sent back via satellite so we can view where the fledged juveniles in near to real time. It is not pinpoint accuracy but will give everyone a general idea of where these individuals are in the vastness of the ocean.
The work was due to be carried out today but has been deferred till tomorrow due to extremely high winds making it unsafe to carry the work out today.
Photos and details of the chicks tagged will be available for next week’s update.
How the tags work, from the Marine Bycatch and Threats team
Solar GPS/PTT combo! I.e. Solar Global Positioning System/Platform Terminal Transmitter
- These tags log locations internally like a GPS and save this to memory but, when they get an ARGOS* satellite fix, they send location like a PTT while also transferring the GPS info that they have been logging to the satellite as well.
- We can then retrieve the PTT and GPS data via an app on our phones / or by logging into the ARGOS website.
- What this means is that we get a high fix rate (which depending on battery power can be up to 1 location every 30 mins) from birds and can retrieve this data while they roam the high seas. It’s a win-win.
https://www.argos-system.org/Because the tags are solar what limits their life span is either
1) The programming is wrong, and they run out of battery fully. Erroneous programming is an uncommon problem.
2) The tags drop off either because birds have been bycaught or are deceased.
3) Tags are moulted off once they reach South America – this is the most common “end of tag life” outcome and occurs around 12-18 months post deployment.
We will share the tracks of these 7 individuals once they become available.