A revision to the distribution of plumage polymorphism in the Red-tailed Hawk (Buteo jamaicensis)

Our study describes spring migratory movements and home ranges during the nesting period for four dark morphs captured in the Great Lakes region of North America contextualized against movements during the nesting period for 22 light morph individuals belonging to the subspecies B. j. abieticola. Our results indicate that these dark types nested in eastern Canada and belong to the same geographic breeding population as the light individuals, extending the distribution of plumage polymorphism in the species approximately 1500 km into eastern Canada. , , , # **A revision to the distribution of plumage polymorphism in the Red-tailed Hawk (Buteo jamaicensis).**

Bryce W. Robinson, the corresponding author, adapted and wrote the code.

This work presents spring migration routes for four dark morph red-tailed hawks (Buteo jamaicensis) and assesses home range size during an 80-day nesting period for 24 (4 dark and 22 light) individuals in boreal Canada during the summer months. In addition, this also includes comparisons between home ranges of sexes and age classes. This README includes code for analyses and data presentation in figures 1 and 2 of the manuscript, including home range analyses and mean home range size comparisons. All code is available in R file **Robinson_2024_JBI.R**, and uses the following data files - **all_nesting.csv, hr.csv, spring_migration.csv, nesting_locs.csv**.

The files **all_nesting.csv** were used in home range analyses.

The files **spring_migration.csv** and **nesting_locs.csv** were used in creating figur...