OLFACTORY NAVIGATION TO NESTING BURROW IN LEACHS PETREL (OCEANODROMA-LEUCORRHOA)
OLFACTORY NAVIGATION TO NESTING BURROW IN LEACHS PETREL (OCEANODROMA-LEUCORRHOA)
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DOI:
10.1016/s0003-3472(74)80069-2
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发表时间:
1974-01-01
期刊:
影响因子:
2.5
通讯作者:
GRUBB, TC
中科院分区:
文献类型:
--
作者:
GRUBB, TC
Visual, auditory, and olfactory navigation in the homing behaviour of Leach's petrel to the nesting burrow were investigated. Petrels returning to their burrows at night hovered above the thick spruce-fir canopy in the vicinity of the burrow before plummeting to the forest floor a few metres downwind of their burrows. They then walked upwind to their burrows. Birds landed closer to, and followed more circuitous routes to, their burrows in still air than in a wind. They failed to avoid obstacles in the path to burrows, often failed to locate accurately burrow entrances on first trial, and vocalized only after entering the burrow. In a Y-maze olfactorium, captive breeding petrels chose an air current coming from their own nest material in preference to one from similar materials collected on the forest floor. In the same apparatus, birds did not respond positively to air currents from their own stomach oil or preen gland oil. Petrels taken from burrows and released that same night did not return within a week if their external nares were plugged or if their olfactory nerves were transected. They did return if not operated on or if only subjected to sham operations. These results support an olfactory guidance system in burrow location and argue against visual or auditory guidance.