Home-related and home-independent orientation of displaced pigeons with and without olfactory access to environmental air

Kiepenheuer, J.; Neumann, Michael F.; Wallraff, Hans Georg

doi:10.1006/anbe.1993.1015

Cited by 12 publications

(5 citation statements)

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“…between the two F -types. This fits with earlier conclusions (Kiepenheuer et al 1993) that, in an unfamiliar environment, spatial and temporal variations in initial orientation occur that are not related to homeward orientation (which apparently is lacking in F -O -) but rather to other directional tendencies (see also Wallraff et al 1992). …”

Section: Resultssupporting

confidence: 78%

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Further experiments on olfactory navigation and non-olfactory pilotage by homing pigeons

Wallraff

Kiepenheuer

Streng

1993

Behav Ecol Sociobiol

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Supplementary to a previous investigation (Wallraff and N e u m a n n 1989), further experiments were conducted with h o m i n g pigeons that were either familiar o f unfamiliar with the release area, and that had or lacked olfactory access to environmental odours. All four possible pairwise combinations o f these factors were tested. The previous results were confirmed, showing that in an unfamiliar area olfactory inputs are necessary for home-related orientation, while in a familiar area both olfactory and non-olfactory information can be utilized and each is m o r e or less redundant as long as the other kind o f information is also available. The degree o f red u n d a n c y o f olfactory inputs varies, obviously depending on the pattern o f individual local experience.

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Section: Resultssupporting

confidence: 78%

“…The site-specific deviations from home were probably independent of home-related orientation (cf. Wallraff 1991 ;Kiepenheuer et al 1993).…”

Section: In W and N )mentioning

confidence: 99%

Further experiments on olfactory navigation and non-olfactory pilotage by homing pigeons

Wallraff

Kiepenheuer

Streng

1993

Behav Ecol Sociobiol

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“…T o prevent the pigeons from smelling ambient odours we could use reliable methods which had been applied successfully many times (WALLRAFF & FoA 1981;e.g. WALLRAFF & NEUMANN 1989;KIEPENHEUER et al 1992). The birds were transported and kept, until a few minutes before release, in airtight containers ventilated with either charcoal-filtered air (experimentals) or natural air (controls).…”

Section: Impairment Of Olfactionmentioning

confidence: 99%

“…30 km distant in the directions N, S, E, and W from home, in this sequence. The preceding history of the birds was as follows: Most of them (originally 65) were born in 1988 and had been released in autumn 1988 / spring 1989, in the course of experiments described by KIEPENHEUER et al (1992), from the four test sites. Another 14 birds were born in 1987, had homed from about five shortdistance releases in that year and then, in the spring of 1989, from 20 flock releases (in five crossshaped arrangements of sites at 5,10, 15,20, and 30 km distance), the last four of which were from the four future test sites.…”

Section: Lofts Pigeons Test Sites and Preceding Releasesmentioning

confidence: 99%

“…Further, the relative importance of familiar landmarks as expressed in observable behaviour certainly depends on the reliability of other orientational signals, on the strength of home-independent directional tendencies (cf. KIEPENHEUER et al 1992) and, in general, on the current motivational condition of the bird. (For a discussion of other aspects in this context, in particular of the involvement of the sun compass, see WALLRAFF 1991 a.…”

Section: Use Of Familiar Visual Landmarks?mentioning

confidence: 99%

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Attempts to Determine the Roles of Visual and Olfactory Inputs in Initial Orientation and Homing of Pigeons over Familiar Terrain

Streng¹,

Wallraff²

1992

Ethology

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1992: Attempts to determine the roles of visual and olfactory inputs in initial orientation and homing of pigeons over familiar terrain. Ethology 91, 203-219. AbstractThe role of familiar visual landmarks in pigeon homing is still unsettled. If they are involved, they must be thought to be utilized in parallel with olfactory signals. In order to recognize the effectiveness of either one of the input channels separately, vision and olfaction, it is therefore necessary to interfere with both of them.Pigeons were temporarily deprived of image vision by spectacles made of translucent white paper, producing a condition called V-as compared with the largely unimpaired condition Vf. Access to olfactory signals was temporarily prohibited by charcoal filters before release and nasal anaesthesia upon release, resulting in condition 0versus unimpaired smelling of natural air in O+. Prior to the test releases, all the participating pigeons had been made familiar with the two or four test sites (and with other sites in the area) by training flights.According to decreasing levels of initial homeward orientation and homing performance, the four combinations of treatments are to be arranged in the following order: V'O', V+O-, V-O+, V-O-. In the last type, no trace of initial homeward orientation remained, indicating that at least one of the two input channels need be functional to enable home-related orientation. Over well known terrain, either alone seems to be more or less sufficient.The results are indicative but not definitely conclusive. Effects of visual impairment on behavioural activities in general cannot clearly be separated from orientation-specific effects. Therefore, and because many pigeons refuse to fly in V-condition or fail to provide useful data, we stopped applying this method.

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Using randomization techniques to analyse behavioural data

1996

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Home-related and home-independent orientation of displaced pigeons with and without olfactory access to environmental air

Cited by 12 publications

References 0 publications

Further experiments on olfactory navigation and non-olfactory pilotage by homing pigeons

Further experiments on olfactory navigation and non-olfactory pilotage by homing pigeons

Attempts to Determine the Roles of Visual and Olfactory Inputs in Initial Orientation and Homing of Pigeons over Familiar Terrain

Using randomization techniques to analyse behavioural data

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