Iceland Gull

Iceland Gull

Larus glaucoides Bjartmáfur

Iceland Gulls were present in single numbers in April, September and October. Due to difficulty accurately differentiating Iceland and Glaucous Gulls (which share identical plumage characteristics), during surveys when observation conditions were suboptimal or when the birds were being observed at considerable distance, these two species were recorded as ‘Unidentified Glaucous /Iceland Gull’ (see below).

Number of individuals 5 4 3 2 1 0 Low-tide Rising-tide

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Mar Apr May Jun Jul Aug Sep Oct Week number and month

Figure 3-119. Number of Larus glaucoides recorded during weekly low tide and rising tide estuarine surveys in the Andakíll Ramsar site between 12th March and 25th October 2017.

(a) Low tide (b) Rising tide

Figure 3-120. Relative abundance of Larus glaucoides during weekly (a) low tide and (b) rising tide estuarine surveys in the Andakíll Ramsar site between 12th March and 25th October 2017. Dots are randomly positioned within each subsite. While each dot refers to a single bird, it refers to the bird’s presence in that subsite only, and not the bird’s actual location.