Weak population structure in the North American House Wren (Troglodytes aedon)

Cryptic genetic differentiation is being increasingly documented in birds and other organisms using genome-wide variation. A recent example of cryptic genetic differentiation in a widespread species with conserved morphology is the northern house wren (Troglodytes aedon). We found that, despite extremely similar morphology and no documented vocal differences, the two subspecies of the northern house wren, T. a. aedon (eastern) and T. a. parkmanii (western), exhibited both nuclear and mitochondrial genomic differentiation. Individuals present along the Front Range of the Colorado Rocky Mountains possessed nuclear genetic variation intermediate between T. a. aedon and T. a. parkmanii; additionally, both divergent mitochondrial lineages, corresponding to the western and eastern northern house wren populations, occur in Colorado. However, the dynamics of this putative contact zone (i.e., amount of hybridization or introgression) and the degree of differentiation between the two subspecies r..., , , # Weak population structure in the North American House Wren (Troglodytes aedon)

[https://doi.org/10.5061/dryad.83bk3jb37](https://doi.org/10.5061/dryad.83bk3jb37)

## Description of the data and file structure

Avian diversification across North America has been extensively documented in many groups. However, significant differences in plumage and song between study groups have long been a hallmark of this research. This dataset was collected to explore potential cryptic population differentiation in the Northern House Wren (*Troglodytes aedon*). This dataset includes ddRAD sequences from 128 House Wrens collected across California, Colorado, and the east coast of the united states.

### Files and variables

#### File: howr\_ddrad\_raw\_variants.vcf.gz

**Description:** This is a raw VCF file containing 128 ddRAD sequences of* T. aedon*

## Access information

Other publicly accessible locations of the data:

* National Institute of Health Sequence Read Archive Project PRJNA1016398