Dataset DOI: 10.5061/dryad.0k6djhbff

Description of the data and file structure

Data were created from photographs and specimens of White-faced Storm-Petrels from primarily from Macaulay Library, as well as the Australian Museum, and other sources. They represent trait data used in analysis in the manuscript.

Files and variables

File: WFSP_code.R

Description: R code for the polytomous latent class analysis and visualisation of data used in the manuscript.

File: WFSP_data.csv

Description: Trait data of White-faced Storm-Petrels.

Variables

• ID: Categorical. Individual identification category associated with Macaulay ID numbers, museum ID numbers, and custom IDs for others.
• Locality: Categorical. Location of the record.
• Latitude: Continuous. Decimal latitude.
• Longitude: Continuous. Decimal longitude.
• Date: Categorical. Date of record in dd/mm/yyyy format.
• Year: Continuous. Year of record.
• Month: Continuous. Month of record.
• Day: Continuous. Day of record.
• Tail_shape: Categorical. Forked – outer rectrices notably longer than inner rectrices. Square – outer and inner rectrices were approximately similar length. 0 – no data.
• Rump_extent: Categorical. The extent of white on the rump classified by percentage of white coverage, with bins of 0-25%, 25-50%, 50-75%, and 75-100%. 0 – no data.
• Rump_colour: Categorical. Overall majority colour of the rump: white or grey. 0 – no data.
• Rump_feather_tip_colour: Categorical. Colour of the rump feather tips: white or grey. 0 – no data.
• Collar: Categorical. Short – collar extends only as far as the neck. Long – collar extends downwards onto the breast or behind the neck/breast onto the flanks. 0 – no data.
• Flank_streaks: Categorical. Absent – no streaking on the flanks. Light – limited streaking on the flanks. Thick – lots of streaking very obviously and densely distributed on the flanks. 0 – no data.
• Wing_bar_colour: Categorical. Colour of the tips of the greater secondary coverts as grey, brown, or blackish. 0 – no data.
• M_or_L_Covert_colour: Categorical. Colour of median and/or lesser coverts as grey, brown, or blackish. 0 – no data.
• Trailing_edge: Categorical. Three categories based on comparison to “average” width of the dark trailing edge of the wing (calibrated by reviewing 50 random individuals). These individuals were classified as medium, with thin and thick categories representing perceptibly lesser or greater width than this average respectively. 0 – no data.
• unique_id: Categorical. Random number per individual.

Code/software

Analysis in R statistical software - see .R file.