The birds and animals behave rather differently in the low Arctic, since they have a more regular cycle of light and dark (or, at least, bright and dim). So they tend to follow something of a diurnal cycle.
I was in Akureyri, northern Iceland, on 21 June 1986. We drove up to Sauðanes at midnight: the peninsula is a little south of the Arctic Circle, but high enough to allow a view of the midnight sun at solstice. Orange disc of the sun on the northern horizon, band of yellow-orange around the horizon, blue sky overhead, certainly no stars. But the seabirds were on their nests, and were much quieter than they are during the middle of the day.

Grant Hutchison