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Description of the primary data from: 

"A global analysis of aerial displays in passerines revealed an effect of habitat, 
mating system and migratory traits"

by Peter Mikula, Anna Toszogyova & Tomas Albrecht

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WHEN USING the data, PLEASE CITE both the original paper and this dataset

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1. data.txt
the primary tab-delimited table containing data on aerial displays and a set of life-history 
and environmental predictors in passerine birds; Note: empty cells are missing data

Scinam - the scientific (Latin) name of the species as used in the BirdTree project (http://birdtree.org/)
CommonName - the common (English) name of the species as used in the Birds of the World database (https://birdsoftheworld.org/)
Family - family affiliation of the species
AerialDisplay - main dataset with strict criteria for the sexual function of aerial displays and flight component of avian displays (0/1)
AerialDisplaySource - source publications (for details see sources.txt file)
RelaxSexual - dataset with relaxed criteria for the sexual function of aerial displays (0/1)
RelaxSexualSource - source publications (for details see sources.txt file)
RelaxFlight - dataset with relaxed criteria for the presence of flight component in sexual displays (0/1)
RelaxFlightSource - source publications (for details see sources.txt file)
HabitatIUCN - habitat type extracted from IUCN Red List database (closed = 0; semi-open = 1; open = 2)
HabitatTobias - habitat type extracted from Tobias et al. (2016) (closed = 1; semi-open = 2; open = 3) 
BodyMass - mean species body mass (g)
MaleBM - mean male body mass (g)
SSDbm - sexual size dimorphism in body mass = log10(male body mass) - log10(female body mass)
MaleColour - male plumage colouration
Dichromatism - sexual dichromatism in plumage colouration = log10(male plumage score) - log10(female plumage score)
MatingSystem - mating systems (strict social monogamy = 0; social monogamy with a low incidence of social polygyny = 1; social monogamy with regular facultative social polygyny = 2; obligate polygyny = 3)
HWI - hand-wing index
Migration - migration score (sedentary = 1; partially migratory = 2; fully migratory = 3)
LatitudeAbs - absolute median latitude of breeding/resident range of species 

2. sources.txt
the tab-delimited table containing a list of abbreviated and full data source references
Abbreviation - abbreviated data source reference
Full - full data source reference

3. recordings.txt
the tab-delimited table containing a list of recordings documenting the presence of aerial displays in passerines
Scinam - the scientific (Latin) name of the species as used in the BirdTree project (http://birdtree.org/)
RecordingID - Recording ID from Xeno-canto (XC) and Macaulay library (ML) databases