The complete subject is hundreds of gulls.
Were flying around the dock
The compound verb "were flying" is intransitive; it does not require any direct object to complete its meaning, but instead describes an independent characteristic of the subject of a clause in which it occurs.
"are flying"
That is not a complete question.
That is the correct spelling of "flying around", and a synonym is aviating.
F. W. Lanchester has written: 'The flying-machine from an engineering standpoint' -- subject(s): Airplanes, Flying machines, Flying-machines 'The flying machine' 'Relativity' -- subject(s): Gravitation, Relativity 'Aerodynamics' -- subject(s): Aerodynamics, Flight 'Aerodynamik' -- subject(s): Aerodynamics, Flight
They get around by Flying.
"Phoenix travel varies depending on where you are flying out of. For the most part, it is between the three hundreds to four hundreds however there are some outliers."
William James Jackman has written: 'Flying machines: construction and operation' -- subject(s): Accessible book, Flying-machines 'The world's workshop' -- subject(s): Science, Industrial arts, Technology 'Flying machines' -- subject(s): Accessible book, Flying-machines 'Crushed stone and its uses' -- subject(s): Concrete 'The fireside library of knowledge' -- subject(s): Juvenile and popular literature.
Jenny Randles has written: 'UFO retrievals' -- subject(s): Unidentified flying objects, Sightings and encounters 'Sixth sense' -- subject(s): Miscellanea, Parapsychology, Extrasensory perception, Senses and sensation 'Detectives Psiquicos' 'The UFO conspiracy' -- subject(s): Unidentified flying objects 'Beyond Explanation?' 'The Paranormal Year' 'UFO Conspiracy From the Official Case Files of the World's Leading Nations' 'Strange & unexplained mysteries of the 20th century' -- subject(s): Curiosities and wonders 'Beyond Science' 'Time Storms' -- subject(s): Curiosities and wonders, Fourth dimension, Space and time, Time travel 'Viajando en el Tiempo' 'UFO study' -- subject(s): Unidentified flying objects 'Science and the UFOs' -- subject(s): Unidentified flying objects 'From Out of the Blue' -- subject(s): Unidentified flying objects, Sightings and encounters 'Ufo!' -- subject(s): Unidentified flying objects, Aircraft accidents, Sightings and encounters 'UFOs' -- subject(s): Unidentified flying objects, Sightings and encounters 'Star Children' -- subject(s): Life on other planets 'The Complete Book of Aliens & Abductions' 'The truth behind men in black' -- subject(s): Men in black (UFO phenomenon), Human-alien encounters 'Encyclopedia of the Unexplained' 'World's best \\' -- subject(s): Unidentified flying objects, Juvenile literature, Sightings and encounters 'Spontaneous human combustion' -- subject(s): Death, Burns and scalds, Causes 'The Pennine UFO mystery' 'Alien contacts & abductions' -- subject(s): Unidentified flying objects, Sightings and encounters, Life on other planets
by flying around
Flying Circus