In dealing with the issue of improving internet at Skalanes I did some research into the topography between the Skalanes lodge and the ferry station where the internet antenna is. I used google earth to draw a line from the ferry station to the lodge. It turns out that the are some mountains over 2,000ft in between which could be a large obstacle in the implementation of a balloon. Although the signal ‘curves’ it still seems like it would be hard to make the internet here more reliable this way. The screenshot on the left shows the topographic 3D map from the ferry station, looking down the fiord towards Skalanes.

Next I looked for the telephone wire running to Skalanes which, I believe, is in the google earth image on the right.
A few more things about arctic terns:

average mass is 100g

105.63 F mean body temperature according to Body Temperatures of Antarctic Birds Carl R. Eklund (1942)