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The Great Northern Diver comes inshore only to breed, rest of the time it spends out in the open ocean in waters up to 600m deep. They are seen only occasionally on our tours but unmistakable when seen. In America they are called the Common or Great Northern Loon. ‘Loon’ because of its eerie, haunting cries.
| Average Length: | 69-91 cm |
| Average Weight: | 3.5 kg |
| Wingspan: | 127-147 cm |
| Diet: | Mostly fish but also invertebrates |
| Est. population around Iceland: | ~ 300 pairs |
| Residence Period: | All year round |
| Nesting habitat: | Lakes, ponds, rivers on banks or inlets |
| Nesting Period: | Mid May to Early July |
| Clutch size (No eggs): | 2 |
| Incubation time (days): | 24-25 |
| Fledging time: | 70-77 |
| Typical life span (years): | No Data |
| Age at first breeding (years): | No Data |
| IUCN world Status: | Least concern |
| Major Threats: | Pollution, avian botulism, entanglement, disturbance, dam construction, acidification of lakes |
| Other Names: | Himbrimi, Islom, Amerikanjääkuikka, Eistaucher, Strolaga maggiore, Nur lodowiec, Colimbo grande, IJsduiker, Plongeon imbrin, Mobêlha-grande |