Mike Harris
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View article: Ecosystems mediate climate impacts on northern hemisphere seabirds
Ecosystems mediate climate impacts on northern hemisphere seabirds Open
Ecosystem structure and biophysical processes mediate biological responses to climate changes, but few studies have examined impacts of this dynamic among upper trophic levels. We investigated ecosystem differences in how diverse seabird p…
View article: Past and future effects of climate on the metapopulation dynamics of a Northeast Atlantic seabird across two centuries
Past and future effects of climate on the metapopulation dynamics of a Northeast Atlantic seabird across two centuries Open
Forecasting population responses to rapidly changing marine ecosystems requires mechanistic models integrating complex demographic processes, fitted to long time series, across large spatial scales. We used a Bayesian metapopulation model …
View article: Drivers of Interspecific Spatial Segregation in Two Closely‐Related Seabird Species at a Pan‐Atlantic Scale
Drivers of Interspecific Spatial Segregation in Two Closely‐Related Seabird Species at a Pan‐Atlantic Scale Open
Aim Ecologically similar species living in sympatry are expected to segregate to reduce the effects of competition where resources are limiting. Segregation from heterospecifics commonly occurs in space, but it is often unknown whether suc…
View article: Seabirds show foraging site and route fidelity but demonstrate flexibility in response to local information
Seabirds show foraging site and route fidelity but demonstrate flexibility in response to local information Open
Background Fidelity to a given foraging location or route may be beneficial when environmental conditions are predictable but costly if conditions deteriorate or become unpredictable. Understanding the magnitude of fidelity displayed by di…
View article: Consequences of cross‐season demographic correlations for population viability
Consequences of cross‐season demographic correlations for population viability Open
Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long‐lived species, but little is …
View article: Investigating the national implementation of SMS and mobile messaging in population screening (The SIPS study)
Investigating the national implementation of SMS and mobile messaging in population screening (The SIPS study) Open
NIHR Imperial Patient Safety Translational Research Centre.
View article: Metapopulation regulation acts at multiple spatial scales: Insights from a century of seabird colony census data
Metapopulation regulation acts at multiple spatial scales: Insights from a century of seabird colony census data Open
Density‐dependent feedback is recognized as important regulatory mechanisms of population size. Considering the spatial scales over which such feedback operates has advanced our theoretical understanding of metapopulation dynamics. Yet, me…
View article: A new biologging approach reveals unique flightless molt strategies of Atlantic puffins
A new biologging approach reveals unique flightless molt strategies of Atlantic puffins Open
Animal‐borne telemetry devices provide essential insights into the life‐history strategies of far‐ranging species and allow us to understand how they interact with their environment. Many species in the seabird family Alcidae undergo a syn…
View article: Consequences of cross-season demographic correlations for population viability
Consequences of cross-season demographic correlations for population viability Open
Demographic correlations are pervasive in wildlife populations and can represent important secondary drivers of population growth. Empirical evidence suggests that correlations are in general positive for long-lived species, however little…
View article: Earlier and more frequent occupation of breeding sites during the non‐breeding season increases breeding success in a colonial seabird
Earlier and more frequent occupation of breeding sites during the non‐breeding season increases breeding success in a colonial seabird Open
Competition for high‐quality breeding sites in colonial species is often intense, such that individuals may invest considerable time in site occupancy even outside the breeding season. The site defense hypothesis predicts that high‐quality…
View article: New biologging approach reveals unique flightless moult strategies of Atlantic puffins
New biologging approach reveals unique flightless moult strategies of Atlantic puffins Open
Animal-borne telemetry devices provide essential insights into the life-history strategies of far-ranging species and allow us to understand how they interact with their environment. Many species in the seabird family Alcidae undergo a syn…
View article: Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales
Variation and correlation in the timing of breeding of North Atlantic seabirds across multiple scales Open
Timing of breeding, an important driver of fitness in many populations, is widely studied in the context of global change, yet despite considerable efforts to identify environmental drivers of seabird nesting phenology, for most population…
View article: Modelling and mapping how common guillemots balance their energy budgets over a full annual cycle
Modelling and mapping how common guillemots balance their energy budgets over a full annual cycle Open
The ability of individual animals to balance their energy budgets throughout the annual cycle is important for their survival, reproduction and population dynamics. However, the annual cycles of many wild, mobile animals are difficult to o…
View article: Hywind Scotland Ornithological Monitoring Programme: Overwintering distributions of common guillemot and razorbill populations in Eastern Scotland
Hywind Scotland Ornithological Monitoring Programme: Overwintering distributions of common guillemot and razorbill populations in Eastern Scotland Open
The Hywind Scotland Pilot Park located off the east coast of Scotland has been in operation since 2017 and comprises five floating wind turbines with a total generating capacity of 30 MW. Ornithological monitoring is required as part of th…
View article: Complex population structure of the Atlantic puffin revealed by whole genome analyses
Complex population structure of the Atlantic puffin revealed by whole genome analyses Open
View article: Complex population structure of the Atlantic puffin revealed by whole genome analyses
Complex population structure of the Atlantic puffin revealed by whole genome analyses Open
The factors underlying gene flow and genomic population structure in vagile seabirds are notoriously difficult to understand due to their complex ecology with diverse dispersal barriers and extensive periods at sea. Yet, such understanding…
View article: Individual migration strategy fidelity but no habitat specialization in two congeneric seabirds
Individual migration strategy fidelity but no habitat specialization in two congeneric seabirds Open
Aim In migratory species, individuals often use fixed and individual‐specific migration strategies, which we term individual migration strategy fidelity (IMSF). Our goal was to test if guillemots have flexible or fixed individual migration…
View article: Sule Skerry – an overspill gannetry from Sule Stack
Sule Skerry – an overspill gannetry from Sule Stack Open
Northern Gannets Morus bassanus first bred on Sule Skerry, Orkney, Scotland in 2003. A count made from photographs taken using a drone in July 2018 showed that the population had increased to 4,515 apparently occupied sites with a mean ann…
View article: Material Properties of Semiconductors
Material Properties of Semiconductors Open
View article: Global phenological insensitivity to shifting ocean temperatures among seabirds
Global phenological insensitivity to shifting ocean temperatures among seabirds Open
View article: Ocean-wide Drivers of Migration Strategies and Their Influence on Population Breeding Performance in a Declining Seabird
Ocean-wide Drivers of Migration Strategies and Their Influence on Population Breeding Performance in a Declining Seabird Open
View article: Investigating the effects of age‐related spatial structuring on the transmission of a tick‐borne virus in a colonially breeding host
Investigating the effects of age‐related spatial structuring on the transmission of a tick‐borne virus in a colonially breeding host Open
Higher pathogen and parasite transmission is considered a universal cost of colonial breeding due to the physical proximity of colony members. However, this has rarely been tested in natural colonies, which are structured entities, whose m…
View article: Reproductive performance of resident and migrant males, females and pairs in a partially migratory bird
Reproductive performance of resident and migrant males, females and pairs in a partially migratory bird Open
Quantifying among‐individual variation in life‐history strategies, and associated variation in reproductive performance and resulting demographic structure, is key to understanding and predicting population dynamics and life‐history evolut…
View article: Status, origin, and population level impacts of Atlantic Puffins killed in a mass mortality event in southwest Norway early 2016
Status, origin, and population level impacts of Atlantic Puffins killed in a mass mortality event in southwest Norway early 2016 Open
The typical life history of long-lived seabirds makes their populations extra sensitive to decreases in adult survival. It is therefore important to uncover the extent, causes and consequences of any incident that involves massive die-offs…
View article: Nocturnal colony attendance by Common Guillemots Uria aalge at colony in Shetland during the pre-breeding season
Nocturnal colony attendance by Common Guillemots Uria aalge at colony in Shetland during the pre-breeding season Open
Time-lapse photography was used to describe daily and seasonal trends in attendance by Common Guillemot Uria aalge at a colony in Shetland prior to the breeding season, including detection of nocturnal presence. A camera took a photo every…
View article: Monitoring the breeding success of Common Guillemots Uria aalge: the value of multiple plots
Monitoring the breeding success of Common Guillemots Uria aalge: the value of multiple plots Open
Results from seabird monitoring programmes are increasingly being used to assess the state of the marine environment, but data are time consuming to collect. We used monitoring data from a colony of Common Guillemots Uria aalge in the Nort…
View article: The need for year-specific correction factors (<i>k</i>values) when converting counts of individual Common Guillemots<i>Uria aalge</i>to breeding pairs
The need for year-specific correction factors (<i>k</i>values) when converting counts of individual Common Guillemots<i>Uria aalge</i>to breeding pairs Open
Long-term studies at two Scottish colonies show that the k value used to convert counts of individual Common Guillemots Uria aalge to pairs has changed substantially in the last 15 years due to decreases in survival and colony attendance. …
View article: Skipped breeding in common guillemots in a changing climate: restraint or constraint?
Skipped breeding in common guillemots in a changing climate: restraint or constraint? Open
Climate change may have demographic consequences for marine top predators if it leads to altered rates of skipped breeding. Here we examine variation in skipping propensity at both the population and individual levels in common guillemots …
View article: The use of k values to convert counts of individual Razorbills Alca torda to breeding pairs
The use of k values to convert counts of individual Razorbills Alca torda to breeding pairs Open
A 32-year study of Razorbills Alca torda on the Isle of May, southeast Scotland, showed that the mean value of k, used to convert counts of individual birds to breeding pairs, averaged 0.795 ± 0.019 SE and increased significantly over the …