Data and Code for Niche construction through an optimal host brood size is supported in brown-headed cowbirds: A response to M. Soler

This data was collected in response to a critique by Soler (2023) of Antonson et al. (2022). In the response paper for which the data was used, we respond to Soler's critique with data on cowbird host identity and natural patterns of host brood reduction and parasite mortality from early papers Kilner (2003) and Hauber (2003).