Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
ground movement
RRTB pushes both feet
together - the fore body
rises up somewhat into air
& lands again on breast.
At times, uses wrist wings
to lever itself over obstacle -
also uses bill - hooks
bill over branch &
pulls head downward,
lifting body up over
obstacle