Black sparrowhawk survey data

Each row represents one image that appeared on a Google Images Search Engine Result Page (SERP). The column headings are as follows: survey_id - unique identifier of the newer survey result; gce_id - unique identifier of the older survey result; comments - researcher's comments on the image; age - black sparrowhawk age (juvenile/adult); sex - black sparrowhawk sex (male/female); photographer - name of photographer; colour_morph - black sparrowhawk colour morph (dark/light); image_usable - if image of black sparrowhawk in South Africa with colour morph visible; location_name - name of the location where the photograph was taken; latitude - latitude at which photograph was taken in decimal degrees; longitude - longitude at which photograph was taken in decimal degrees; direct_link - the URL of the image on the internet; visible_link - the website on which the image appeared