# overview
We study the processes of adaptation and speciation using hybrid zones and variation within single species. These systems are ideal for studying evolutionary processes; they allow us to concentrate on the early stages of speciation and work in natural contexts. Our work focuses specifically on the phenotypic and genetic basis of adaptation and speciation and is aided by recent advances in several fields. For example, we are very interested in the role differences in seasonal migration play in speciation and the genetic basis of this behaviour syndrome. Advances in animal movement ecology and genomic are allowing answer questions we never thought possible. Much of our work focuses on single systems but wherever possible we expand out into larger comparative work using data from museum specimens and sequence archives.

# educationAndTraining[].organization.label
University of British Columbia - (Vancouver, British Columbia, Canada)

# publications[].label
Shared Patterns of Genome-Wide Differentiation Are More Strongly Predicted by Geography Than by Ecology.

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Reduced habitat suitability and landscape connectivity in a songbird migratory divide

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Population genetics and abundance of the Endangered grey-headed lemur Eulemur cinereiceps in south-east Madagascar: assessing risks for fragmented and continuous populations

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Morphological characterization of a brown lemur hybrid zone (Eulemur rufifrons  E. cinereiceps).

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Use of provisioning ecosystem services drives loss of functional traits across land use intensification gradients in tropical forests in Madagascar

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A Zugunruhe Data Collection System Using Passive Infrared Sensors

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Dramatic intraspecific differences in migratory routes, stopover sites and wintering areas, revealed using light-level geolocators.

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Habitat preference facilitates successful early breeding in an opencup nesting songbird

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Phenotypic divergence during speciation is inversely associated with differences in seasonal migration.

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Niche Divergence in a Brown Lemur (Eulemur spp.) Hybrid Zone: Using Ecological Niche Models to Test Models of Stability

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Investigating Factors that Generate and Maintain Variation in Migratory Orientation: A Primer for Recent and Future Work.

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Clinal variation in a brown lemur (Eulemur spp.) hybrid zone: combining morphological, genetic and climatic data to examine stability.

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Genomic analysis of a migratory divide reveals candidate genes for migration and implicates selective sweeps in generating islands of differentiation.

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Dense sampling of bird diversity increases power of comparative genomics.

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Hybrid songbirds employ intermediate routes in a migratory divide.

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Population-specific association of Clock gene polymorphism with annual cycle timing in stonechats.

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Learning and memory in hybrid migratory songbirds: cognition as a reproductive isolating barrier across seasons.

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The evolutionary history and genomics of European blackcap migration.

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Individual variability and versatility in an eco-evolutionary model of avian migration.

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Estimating hybridization rates in the wild: Easier said than done?

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Migratory orientation in a narrow avian hybrid zone.

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The Genetics of Seasonal Migration and Plumage Color.

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Population structure, patterns of natal dispersal and demographic history in a declining aerial insectivore, the purple martin Progne subis

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Candidate genes for migration do not distinguish migratory and non-migratory birds.

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Sex allocation and parental quality in tree swallows

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Gene regulation and speciation in a migratory divide between songbirds.

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Characterization of 18 microsatellite marker loci in the white-collared lemur (Eulemur cinereiceps)

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Paternity assurance through frequent copulations in a wild passerine with intense sperm competition

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Recurrent selection explains parallel evolution of genomic regions of high relative but low absolute differentiation in a ring species.

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Gene flow and selection interact to promote adaptive divergence in regions of low recombination.

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A comparison of genomic islands of differentiation across three young avian species pairs.

# publications[].label
Cross-decades stability of an avian hybrid zone.