"Nonsense" orientation in mallard Anas platyrhynchos and its relation to experiments on bird navigation
"Nonsense" orientation in mallard Anas platyrhynchos and its relation to experiments on bird navigation
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DOI：
10.1111/j.1474-919x.1961.tb02435.x
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发表时间：
1961-01-01
期刊：
影响因子：
2.1
通讯作者：
MATTHEWS, G. V. T.
中科院分区：
文献类型：
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作者：
MATTHEWS, G. V. T.
非迁徙绿头鸭有强烈的倾向向西北方向飞行。发布时进行了描述。无论释放的距离和方向、季节或圈养时间长短如何，都会显示这种方向。各种性别和各个年龄段的鸟类在一天中的任何时间都会表现出这种现象，并且不受释放地点地形的影响。中等强度的逆风会产生更广泛的散射，否则风的影响很小。它似乎是太阳罗盘方向。方向可能很快就会崩溃，并被随机徘徊所取代。没有迹象表明真正的导航能力。有人认为，这种方向可能有助于保持鸟群聚集在一起，并且与许多鸟类羽翼未丰后向北迁徙有关。如此强烈的方向性及其在另一种非候鸟鸽子身上的存在，被认为导致了用后者进行的导航实验的混乱。在北卡罗来纳州和德国获得的鸽子结果不能再被认为是决定性的；他们与在英国获得的那些人的冲突得到了解决。 ||摘要作者：梅雷尔·伍德
A strong tendency in non-migratory mallards to fly n.-w. on release is described. This orientation is shown regardless of distance and direction of release, of season or of length of captivity. It is shown at any time of day by birds of both sexes and of all ages, and is unaffected by the topography of the release site. Head winds of moderate strength impart a wider scatter, otherwise winds have little effect. It appears to be a sun-compass orientation. The orientation breaks down, probably quickly, and is replaced by a random wandering. There are no indications of true navigational ability. It is suggested that the orientation may function to keep flocks together and be related to the northward postfledging movements of many birds. The existence of such a strong orientation and its presence in another non-migratory bird, the pigeon, is considered to have caused confusion in experiments on navigation undertaken with the latter. Results obtained with pigeons in N. Carolina and Germany can no longer be considered conclusive; their conflict with those obtained in England is resolved. || ABSTRACT AUTHORS: Merrell Wood