Web databases of feather photographs are useful tools for avian morphometry studies
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'1. Wing area, wing loading and aspect ratio are key variables for studies of avian comparative ecology, despite the complexity of measuring wing characteristics in living and museum specimens. The systematic databases of feather photographs available on the internet may offer an alternative way of obtaining such morphometric data.  Here we evaluate whether measurements of scanned feathers from web photo databases may offer reliable estimates of avian morphometry.2. Published data on wing area was obtained for 317 bird species and feather measurements from web photo databases for 225 of them. A variable termed ‘lift generation area’, a proxy for wing area, was calculated for each species on the basis of the mean length of the five distal secondary feathers and wingspan data from literature. The fit between this proposed variable and dat' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["aspect ratio","bird","feather","measurement error","photogrammetry","size","web database","wing area"]} <|eot_id|>
 Here is the Description of a dataset. Description:'1. Wing area, wing loading and aspect ratio are key variables for studies of avian comparative ecology, despite the complexity of measuring wing characteristics in living and museum specimens. The systematic databases of feather photographs available on the internet may offer an alternative way of obtaining such morphometric data.  Here we evaluate whether measurements of scanned feathers from web photo databases may offer reliable estimates of avian morphometry.2. Published data on wing area was obtained for 317 bird species and feather measurements from web photo databases for 225 of them. A variable termed ‘lift generation area’, a proxy for wing area, was calculated for each species on the basis of the mean length of the five distal secondary feathers and wingspan data from literature. The fit between this proposed variable and dat' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
1. Wing area, wing loading and aspect ratio are key variables for studies of avian comparative ecology, despite the complexity of measuring wing characteristics in living and museum specimens. The systematic databases of feather photographs available on the internet may offer an alternative way of obtaining such morphometric data.  Here we evaluate whether measurements of scanned feathers from web photo databases may offer reliable estimates of avian morphometry.2. Published data on wing area was obtained for 317 bird species and feather measurements from web photo databases for 225 of them. A variable termed ‘lift generation area’, a proxy for wing area, was calculated for each species on the basis of the mean length of the five distal secondary feathers and wingspan data from literature. The fit between this proposed variable and dat
aspect ratio; bird; feather; measurement error; photogrammetry; size; web database; wing area