G. T. Hallgrimsson

Publications23
h-index8
Citations269
Highly Influential Citations18
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Wild birds of declining European species are dying from a thiamine deficiency syndrome
Wild birds of several species are dying in large numbers from an idiopathic paralytic disease in the Baltic Sea area. Here, we demonstrate strong relationships between this disease, breeding failure,… Expand
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North Atlantic Migratory Bird Flyways Provide Routes for Intercontinental Movement of Avian Influenza Viruses
Avian influenza virus (AIV) in wild birds has been of increasing interest over the last decade due to the emergence of AIVs that cause significant disease and mortality in both poultry and humans.… Expand
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Genotoxicity in herring gulls (Larus argentatus) in Sweden and Iceland.
Adult and young herring gulls (Larus argentatus) in Sweden and Iceland were investigated with respect to DNA adducts, analysed with the nuclease-P1 version of the (32)P-postlabelling method, and… Expand
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Low fitness at low latitudes: Wintering in the tropics increases migratory delays and mortality rates in an Arctic breeding shorebird
Abstract Evolutionary theories of seasonal migration generally assume that the costs of longer migrations are balanced by benefits at the non‐breeding destinations. We tested, and rejected, the null… Expand
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Avian influenza virus ecology in Iceland shorebirds: intercontinental reassortment and movement.
Shorebirds are a primary reservoir of avian influenza viruses (AIV). We conducted surveillance studies in Iceland shorebird populations for 3 years, documenting high serological evidence of AIV… Expand
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Migration pattern of Icelandic Lesser Black-backed Gulls Larus fuscus graellsii: indications of a leap-frog system
AbstractOn the species level, the non-breeding distribution and the migration patterns of most European birds are well known. In contrast, the knowledge of the contribution of different breeding… Expand
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A review of the subspecies status of the Icelandic Purple Sandpiper Calidris maritima littoralis
The Icelandic Purple Sandpiper Calidris maritima littoralis (C.L. Brehm, 1831) represents one member of a poorly understood subspecies complex. Currently, differences in size define two other… Expand
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Sexing adult and fledgling Lesser Black-backed Gulls from morphometrics
ABSTRACT Gulls are monomorphic in plumage characteristics but show a sexual size dimorphism where males are larger than females. In this study, we use discriminant function analyses (DFA) and… Expand
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Reply to Rocke and Barker: The question is not whether birds are affected by thiamine deficiency or botulism, it is about the order of events
Contrary to the suggestion by Rocke and Barker (1), we do not want to exclude botulism as a part of the investigated wildlife disorder (2), because botulism may be secondary to the thiamine… Expand
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Aerosol Transmission of Gull-Origin Iceland Subtype H10N7 Influenza A Virus in Ferrets
Subtype H10 avian influenza A viruses (IAVs) have caused sporadic human infections and enzootic outbreaks among seals. In the fall of 2015, H10N7 viruses were recovered from gulls in Iceland, and… Expand
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