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Research

My research program takes specimen-based approach to understanding avian evolutionary dynamics across phylogenetic diversity, trait complexity, time, and space. I integrate natural history collections, genomic sequencing, and quantitative trait datasets to examine how genes, traits, and environments interact to shape diversification. Using high-resolution microscopy (SEM, TEM), micro-CT scanning, and UV/NIR spectrophotometry, I study the evolution of complex traits linked to survival and reproduction. My dissertation combined whole-genome sequencing and large morphological and colorimetric datasets from historical specimens and those I collected myself in the Pacific to address longstanding hypotheses about avian evolution on islands. My NSF Postdoctoral research extends this work, examining the mechanisms underlying rapid feather color evolution. Together, these projects form a cohesive, collections-driven program that integrates genomics, morphology, and field discovery across the Pacific.

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Some recent published works include: 

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Breeding Biology & Natural History

Natural history observations have historically been, and continue to be, the bedrock of ecology and evolution. When I can, I contribute to our ever-expanding knowledge base on breeding biology, behavior, and ecology of birds. Here are some examples of natural history studies that I've published: 

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You can email me at jmccullough [at] nhm.org

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