Flygmekanik i sidledsmanöver hos Svartvit flugsnappare (Ficedula hypoleuca)
(2019) BIOK01 20182Degree Projects in Biology
- Abstract
- There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. For the most part studies concern bats, insects or hummingbirds. What makes research on maneuvering on birds important is that in a bird’s everyday life, very little of it consists of steady flight. This study has looked on the Pied flycatcher. The Pied flycatcher is a species whose attributes fits the experiment very well due to its specialization on catching prey mid-air. Two birds have been filmed in a wind tunnel where they are following a feeder sideways. Every frame of the recordings has been analyzed to see exactly how the birds are accomplishing the required movement to... (More)
- There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. For the most part studies concern bats, insects or hummingbirds. What makes research on maneuvering on birds important is that in a bird’s everyday life, very little of it consists of steady flight. This study has looked on the Pied flycatcher. The Pied flycatcher is a species whose attributes fits the experiment very well due to its specialization on catching prey mid-air. Two birds have been filmed in a wind tunnel where they are following a feeder sideways. Every frame of the recordings has been analyzed to see exactly how the birds are accomplishing the required movement to follow the feeder sideways. The position of 11 different body points was determined in every frame. The length and angle relationship were analyzed in MATLAB to visualize patterns of movements. The results indicate that the birds are using subtle differences in the right and left wing during down and upstroke of the wings to create slightly different vortices on each wing to maneuver itself along with the feeder, hence being able to follow and focus on its prey. These results can inspire future research that studies the subtle differences in upstroke and downstroke to create forces to maneuver. (Less)
- Popular Abstract
- How does the Pied flycatcher maneuver to follow its pray midair?
There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. What makes research on maneuvering on birds important is that in a bird’s everyday life, maneuvering flight depicts the bird’s ecology further. This study has looked on the Pied flycatcher (Ficedula hypoleuca) because it is a species whose attributes fits the experiment very well due to its specialization on catching prey midair.
Two birds have been filmed in a wind tunnel where it is following a feeder sideways which depicts a flying insect. Every frame of the recordings has been analyzed to see exactly how... (More) - How does the Pied flycatcher maneuver to follow its pray midair?
There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. What makes research on maneuvering on birds important is that in a bird’s everyday life, maneuvering flight depicts the bird’s ecology further. This study has looked on the Pied flycatcher (Ficedula hypoleuca) because it is a species whose attributes fits the experiment very well due to its specialization on catching prey midair.
Two birds have been filmed in a wind tunnel where it is following a feeder sideways which depicts a flying insect. Every frame of the recordings has been analyzed to see exactly how the birds is accomplishing the required movement to follow the feeder sideways. The position of 11 different body points was determined in every frame. The length and angle relationship were analyzed in MATLAB to visualize the patterns of the movements.
Findings
The results indicate that the birds are using subtle differences in the right- and left-wing during downstroke of the wings to create slightly different vortices on each wing to maneuver itself along with the feeder, hence being able to follow and focus on its prey.
Consequent differences in movement pattern could only be found in wing length which was one of six suspected movement patterns. Differences in amplitude and distance between shoulder and wingtip was found.
Both subjects demonstrate a deeper downstroke of the wing opposite of the direction its moving.
Regarding wing length the two subjects differ by one showing a more stretched left wing going left, while flapping its wings out of phase. Meanwhile, the other showcasing an equal stretch of wings, while flapping its wings in phase.
The amplitude difference is believed to be the main maneuver while it could also explain the patterns observed in wing length.
These results demonstrate the potential of the advanced wind tunnel method. These results can inspire future research to study the subtle differences in upstroke and downstroke to create forces to maneuver. This study suggests there is room left to explain the choice of maneuver the bird is making and relating these to different circumstances of flight and further relate these to the corresponding bird’s ecology.
Examensarbete för kandidatexamen i Biologi 15 hp 2018
Biologiska institutionen, Lunds Universitet
Handledare: Per Henningsson, Evolutionär ekologi. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8968840
- author
- Nilsson, Ludwig
- supervisor
- organization
- course
- BIOK01 20182
- year
- 2019
- type
- M2 - Bachelor Degree
- subject
- language
- English
- id
- 8968840
- date added to LUP
- 2019-01-30 11:17:31
- date last changed
- 2019-01-30 11:17:31
@misc{8968840,
abstract = {{There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. For the most part studies concern bats, insects or hummingbirds. What makes research on maneuvering on birds important is that in a bird’s everyday life, very little of it consists of steady flight. This study has looked on the Pied flycatcher. The Pied flycatcher is a species whose attributes fits the experiment very well due to its specialization on catching prey mid-air. Two birds have been filmed in a wind tunnel where they are following a feeder sideways. Every frame of the recordings has been analyzed to see exactly how the birds are accomplishing the required movement to follow the feeder sideways. The position of 11 different body points was determined in every frame. The length and angle relationship were analyzed in MATLAB to visualize patterns of movements. The results indicate that the birds are using subtle differences in the right and left wing during down and upstroke of the wings to create slightly different vortices on each wing to maneuver itself along with the feeder, hence being able to follow and focus on its prey. These results can inspire future research that studies the subtle differences in upstroke and downstroke to create forces to maneuver.}},
author = {{Nilsson, Ludwig}},
language = {{eng}},
note = {{Student Paper}},
title = {{Flygmekanik i sidledsmanöver hos Svartvit flugsnappare (Ficedula hypoleuca)}},
year = {{2019}},
}