DOI: 10.5061/dryad.905qftthz
title: Dataset listing bird species, bird hybrids, and associated species information for bird species

description: Dataset describing presence, absence, and extent of hybridization across
 1011 bird species. The dataset also includes life history and natural
 history variables. The common names and species names of all bird species
 are listed within the dataset.  The dataset was used to document
 which bird species hybridized with others, and then to determine which
 species variables were associated with the likelihood of hybridization.
 Specifically, migration, social bonds, and other species variables were
 used in comparative analysis to determine which traits make birds more
 likely to produce offspring with heterospecific species. 
description: Compiled from book (McCarthy EM. Handbook of Avian Hybrids of the
 World. Oxford, UK: Oxford University Press; 2006.)
description: Species names listed in columns A-C. Hybrid
 information listed in columns D-E. Classification as a
 passerine or not is listed in column F. Columns G-M
 were not used in this study. Column N represents the
 present of lekking in the species. Columns O-S
 represent categorical variables for each species. 
 Column T represents the average mass of each species. 
 Column U is a factor variable representing the presence of
 cooperative breeding.  Columns W-Z are data from Tobias
 et al 2016 on sociality in birds. Columns AA-AD are holder
 columns Columns AE-AM specify which species the focal
 species hybridizes with.  Column AN specifies the
 number of papers published on a the specific species in the
 dataset.
description: # Dataset listing bird species, bird hybrids, and associated species
 information for bird species Dataset DOI:
 [10.5061/dryad.905qftthz](https://doi.org/10.5061/dryad.905qftthz) ##
 Description of the data and file structure This CSV file contains the data
 used to conduct evolutionary analysis of hybridization. The species names
 are listed for analysis. Other columns represent data specific to each of
 the species in question.  ### Files and variables #### File:
 HybridizationBirdDatabase_05_09_18.csv **Description:**  ##### Variables *
 Species_Common: Common names of the species * Species: Scientific species
 name * SpeciesNoDash: Scientific name without a dash * HybridBinary:
 Whether the species hybridizes * NumberOfHybrids: How many species the
 focal species hybridizes with * PasserineNonPasserine: Is the species a
 passerine * GroupSizeBreeding: Incomplete group size variable *
 GroupSizeNonBreeding: Incomplete group size variable * MaxGroupSizeExp:
 Incomplete max group size variable * ColonialBreeder: Whether the species
 breeds colonially * GroupSizeComments: * NumIndsStudied: Meta data about
 individuals in the study * StudyMonths: How long the species was studied *
 LekPresence: Whether the species displayed in a lek * BreedingSystem: The
 breeding system of the species * Migratory: Binary variable of whether the
 species migrated * MonoOrDi: Whether the species was dimorphic *
 TypeOfDimorphism: Type of dimorphism if present * Habitat: The habitat the
 species lived in * HBWMass: Mass of the species * Cooperator: Whether the
 species was a cooperative breeder * CoopBinary: Whether the species was a
 cooperative breeder coded as 0,1 * GBD_SpeciesID: Species identifier *
 Communal_Number: Whether the species called communally * Social_Bond_Num:
 length of social bonds in the species * Territory_Num: Territoriality of
 species * Cohesiveness: How strong are the species bonds * SocialBond:
 Length of social bonds of species * CommunalFactor: Communality modified
 to be a factor * TerritoryFactor: Territoriality modified to be a factor *
 H1: * H2: * H3: * H4: * H5: * H6: * H7: * H8: * H9: * ResearchEffort:
 Amount of studies on a species ## Code/software Analyzed in the R
 environment. Code available upon request.  ## Access information Other
 publicly accessible locations of the data: * NA Data was derived from the
 following sources: * See article methods