Robert A. Ronconi
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View article: Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i>
Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i> Open
Most petrels (family Procellariidae) exhibit little or no obvious variation in plumage with age or sex, either because plumage performs no sexual function or does so in a way poorly perceptible to humans. This limits the inferences that ca…
View article: Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i>
Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i> Open
Most petrels (family Procellariidae) exhibit little or no obvious variation in plumage with age or sex, either because plumage performs no sexual function or does so in a way poorly perceptible to humans. This limits the inferences that ca…
View article: Global Marine Flyways Identified for Long‐Distance Migrating Seabirds From Tracking Data
Global Marine Flyways Identified for Long‐Distance Migrating Seabirds From Tracking Data Open
Aim To identify the broad‐scale oceanic migration routes (‘marine flyways’) used by multiple pelagic, long‐distance migratory seabirds based on a global compilation of tracking data. Location Global. Time Period 1989–2023. Major Taxa Studi…
View article: Comparison of whole blood on filter strips with serum for avian influenza virus antibody detection in wild birds
Comparison of whole blood on filter strips with serum for avian influenza virus antibody detection in wild birds Open
Serological surveillance enhances our understanding of influenza A virus (IAV) exposure and dynamics in wild bird populations. Traditional serum-based testing, while effective, poses logistical challenges for large-scale surveillance, part…
View article: Examining avian influenza virus exposure in seabirds of the northwest Atlantic in 2022 and 2023 via antibodies in eggs
Examining avian influenza virus exposure in seabirds of the northwest Atlantic in 2022 and 2023 via antibodies in eggs Open
Seabirds are frequently infected by avian influenza virus (AIV), which prior to 2021 primarily consisted of low-pathogenic AIV with limited reports of disease during infection. However, since highly pathogenic AIV (HPAIV) H5N1 clade 2.3.4.…
View article: Wild bird mass mortalities in eastern Canada associated with the Highly Pathogenic Avian Influenza A( <scp>H5N1</scp> ) virus, 2022
Wild bird mass mortalities in eastern Canada associated with the Highly Pathogenic Avian Influenza A( <span>H5N1</span> ) virus, 2022 Open
In 2022, a severe outbreak of disease caused by clade 2.3.4.4b Highly Pathogenic Avian Influenza (HPAI) H5N1 virus resulted in unprecedented mortality among wild birds in eastern Canada. Tens of thousands of birds were reported sick or dea…
View article: Little change in plastic loads in South Atlantic seabirds since the 1980s
Little change in plastic loads in South Atlantic seabirds since the 1980s Open
Despite growing concern about the large amounts of waste plastic in marine ecosystems, evidence of an increase in the amount of floating plastic at sea has been mixed. Both at-sea surveys and ingested plastic loads in seabirds show inconsi…
View article: Avian influenza viruses in wild birds in Canada following incursions of highly pathogenic H5N1 virus from Eurasia in 2021–2022
Avian influenza viruses in wild birds in Canada following incursions of highly pathogenic H5N1 virus from Eurasia in 2021–2022 Open
Following the detection of novel highly pathogenic avian influenza virus (HPAIV) H5N1 clade 2.3.4.4b in Newfoundland, Canada, in late 2021, avian influenza virus (AIV) surveillance in wild birds was scaled up across Canada. Herein, we pres…
View article: Seabird and sea duck mortalities were lower during the second breeding season in eastern Canada following the introduction of Highly Pathogenic Avian Influenza A H5Nx viruses
Seabird and sea duck mortalities were lower during the second breeding season in eastern Canada following the introduction of Highly Pathogenic Avian Influenza A H5Nx viruses Open
Summary H5N1 clade 2.3.4.4b viruses have caused significant mortality events in various wild bird species across Europe, North America, South America, and Africa. In North America, the largest impacts on wild birds have been in eastern Can…
View article: Wild bird mass mortalities in eastern Canada associated with the Highly Pathogenic Avian Influenza A(H5N1) virus, 2022
Wild bird mass mortalities in eastern Canada associated with the Highly Pathogenic Avian Influenza A(H5N1) virus, 2022 Open
In 2022, a severe outbreak of clade 2.3.4.4b Highly Pathogenic Avian Influenza (HPAI) H5N1 virus resulted in unprecedented mortality among wild birds in eastern Canada. Tens of thousands of birds were reported sick or dead, prompting a com…
View article: Avian influenza viruses in wild birds in Canada following incursions of highly pathogenic H5N1 virus from Eurasia in 2021/2022
Avian influenza viruses in wild birds in Canada following incursions of highly pathogenic H5N1 virus from Eurasia in 2021/2022 Open
Following detection of novel highly pathogenic avian influenza virus (HPAIV) H5N1 clade 2.3.4.4b in Newfoundland, Canada in late 2021, avian influenza surveillance in wild birds was scaled-up across Canada. Herein, we present results of Ca…
View article: Inter-colony variation in predation, mercury burden and adult survival in a declining seabird
Inter-colony variation in predation, mercury burden and adult survival in a declining seabird Open
Migratory species with disjunct and localized breeding distributions, including many colonial marine birds, pose challenges for management and conservation as their dynamics are shaped by both broad oceanographic changes and specific facto…
View article: Limited Outbreak of Highly Pathogenic Influenza A(H5N1) in Herring Gull Colony, Canada, 2022
Limited Outbreak of Highly Pathogenic Influenza A(H5N1) in Herring Gull Colony, Canada, 2022 Open
In summer 2022, highly pathogenic influenza A(H5N1) virus reached the herring gull (Larus argentatus subspecies smithsonianus) breeding colony on Kent Island, New Brunswick, Canada. Real-time monitoring revealed a self-limiting outbreak wi…
View article: Apparent Survival Among Adult Leach's Storm Petrels <i>Hydrobates leucorhous</i> on a Colony Managed for Predators in Nova Scotia, Canada
Apparent Survival Among Adult Leach's Storm Petrels <i>Hydrobates leucorhous</i> on a Colony Managed for Predators in Nova Scotia, Canada Open
Population declines of Leach’s Storm Petrels Hydrobates leucorhous in the western Atlantic have both led to the species’ recent assessment as Threatened in Canada and contributed to a Vulnerable designation by the IUCN. Limited information…
View article: Experts’ opinions on threats to Leach’s Storm-Petrels ( Hydrobates leucorhous ) across their global range
Experts’ opinions on threats to Leach’s Storm-Petrels ( Hydrobates leucorhous ) across their global range Open
Seabirds are declining globally, though the threats they face differ among and within species and populations. Following substantial population declines at several breeding colonies, Leach’s Storm-Petrel (Hydrobates leucorhous) was upliste…
View article: Age-Related Interactions with Wind During Migration Support the Hypothesis of Developmental Learning in a Migrating Long-Lived Seabird
Age-Related Interactions with Wind During Migration Support the Hypothesis of Developmental Learning in a Migrating Long-Lived Seabird Open
Wind patterns shape migratory pathways and detours of many procellariiform bird species that seasonally migrate between hemispheres. These seabirds are long-lived, and the period of immaturity is presumed to be a time of development and le…
View article: Predicting Seabird Foraging Habitat for Conservation Planning in Atlantic Canada: Integrating Telemetry and Survey Data Across Thousands of Colonies
Predicting Seabird Foraging Habitat for Conservation Planning in Atlantic Canada: Integrating Telemetry and Survey Data Across Thousands of Colonies Open
Conservation of mobile organisms is difficult in the absence of detailed information about movement and habitat use. While the miniaturization of tracking devices has eased the collection of such information, it remains logistically and fi…
View article: Female and male Leach's Storm Petrels (<i>Hydrobates leucorhous</i>) pursue different foraging strategies during the incubation period
Female and male Leach's Storm Petrels (<i>Hydrobates leucorhous</i>) pursue different foraging strategies during the incubation period Open
Reproduction in procellariiform birds is characterized by a single egg clutch, slow development, a long breeding season and obligate biparental care. Female Leach's Storm Petrels Hydrobates leucorhous , nearly monomorphic members of this o…
View article: Multispecies tracking reveals a major seabird hotspot in the North Atlantic
Multispecies tracking reveals a major seabird hotspot in the North Atlantic Open
The conservation of migratory marine species, including pelagic seabirds, is challenging because their movements span vast distances frequently beyond national jurisdictions. Here, we aim to identify important aggregations of seabirds in t…
View article: Bird strandings and bright lights at coastal and offshore industrial sites in Atlantic Canada
Bird strandings and bright lights at coastal and offshore industrial sites in Atlantic Canada Open
Artificial lights can disorient birds and lead to injury or death. In Atlantic Canada, lights attract birds at sites along the coastline and offshore, but the relative impacts of lights on birds in this region are largely unknown. We summa…
View article: Estimating the relative use of anthropogenic resources by Herring Gull (Larus argentatus) in the Bay of Fundy, Canada
Estimating the relative use of anthropogenic resources by Herring Gull (Larus argentatus) in the Bay of Fundy, Canada Open
Gulls (Larus spp.) are described as generalist, opportunistic feeders that show great flexibility in habitat use. Despite an apparent advantage in changing landscapes, many Larus populations have declined in eastern North America since the…
View article: Non-breeding Movements and Foraging Ecology of the Black Guillemot <i>Cepphus grylle</i> in Atlantic Canada
Non-breeding Movements and Foraging Ecology of the Black Guillemot <i>Cepphus grylle</i> in Atlantic Canada Open
Understanding the movements of seabirds, which are important ecological indicators, can provide new insights into physical and biological aspects of the marine environment. This information can also be used in planning marine conservation …
View article: The influence of multiple industries on the behaviour of breeding gulls from four colonies across the eastern Gulf of Maine, Canada
The influence of multiple industries on the behaviour of breeding gulls from four colonies across the eastern Gulf of Maine, Canada Open
Opportunist gulls use anthropogenic food subsidies, which can bolster populations, but negatively influence sensitive local ecosystems and areas of human settlement. In the eastern Gulf of Maine, Canada, breeding herring gulls Larus argent…
View article: Bird strandings and bright lights at coastal and offshore industrial sites in Atlantic Canada
Bird strandings and bright lights at coastal and offshore industrial sites in Atlantic Canada Open
Gjerdrum, C., R. A. Ronconi, K. L. Turner, and T. E. Hamer. 2021. Bird strandings and bright lights at coastal and offshore industrial sites in Atlantic Canada. Avian Conservation and Ecology 16(1):22. https://doi.org/10.5751/ACE-01860-160…
View article: Estimating the relative use of anthropogenic resources by Herring Gull (Larus argentatus) in the Bay of Fundy, Canada
Estimating the relative use of anthropogenic resources by Herring Gull (Larus argentatus) in the Bay of Fundy, Canada Open
Shlepr, K. R., R. A. Ronconi, B. Hayden, K. A. Allard, and A. W. Diamond. 2021. Estimating the relative use of anthropogenic resources by Herring Gull (Larus argentatus) in the Bay of Fundy, Canada. Avian Conservation and Ecology 16(1):2. …
View article: Breeding population decline and associations with nest site use of Leach's Storm-Petrels on Kent Island, New Brunswick from 2001 to 2018
Breeding population decline and associations with nest site use of Leach's Storm-Petrels on Kent Island, New Brunswick from 2001 to 2018 Open
Leach's Storm-Petrels (Hydrobates leucorhous) are burrow-nesting seabirds that breed on coastal islands throughout much of the North Atlantic, with most of the world's population breeding in Atlantic Canada. Population declines in the past…
View article: Annual movement patterns of American common eiders Somateria mollissima dresseri
Annual movement patterns of American common eiders Somateria mollissima dresseri Open
The American common eider Somateria mollissima dresseri is a sea duck of coastal mid-Atlantic North America, and breeding colonies in the southern part of its range have been in decline. To better understand threats faced by the subspecies…