Some swiftlet farmers may concern that if they play two different external sounds, or changing sound when existing sound has lost effect, those swiftlets would get confused or not able to recognize where to home.
Swiftlet is an animal possess capability of location orientating just like the pigeon, with their build-in compass or GPS, they do recognize where their home is and which direction to go home once they have chosen a BH for nesting, there is a small memory of orientation programmed in their mind, this is also how they can find they own unique nest easily in dark space among thousands of nest.
For experiment, if you turn off external sound in a tenanted BH, those existing tenant will still come back as usual. But without external sound, your BH if it is not highly populated one will not be inviting any new birds to become new tenant even your own young swiftlet.
External sound is just tool for promoting or advertising your BH, draw attention and invite young swiftlet to visit BH, whether they decide to stay or next door which will be depending on your BH design and internal factors.
External sound is not the recognition mark for homing. In fact sound called by real swiftlet in natural cave will vary from time to time. I do believe that change of sound or play more than one sounds will not cause any negative impact to the growth but will contributing in positive side.
有些燕农可能担心，如果他们播放两个不同的外部声音，或在外声已经失去了效应后更换现有的外声时，这些燕子会感到困惑或者不能够识途回家。
燕子是一种拥有宛如鸽子方向定位能力的动物，他们拥有已天生具来的‘指南针或GPS’，一旦他们选择了一间燕屋落脚，他们会认得是在哪个方向回家，因为在他们的记忆中已经编程了定位，这也是为何他们可以在拥有成千上万颗窝的黑暗的空间找到他们自己唯一的窝。
做一个小实验，如果你在一间已有燕窝的燕屋关掉外声，这些现有燕子将仍然像往常一样回来。只是如果没有外部声音，你的燕屋如果不是已有大燕群的话将不会吸引新的燕子甚至你自己的小燕子成为新的住客。
外声作用是推广或宣传你的燕屋，吸引燕子注意并邀请年轻的燕子到访燕屋的工具，他们是否选择居留你的燕屋或隔壁的将与燕屋设计和内部因素相关。
外部声音不是识途标志，实际上在天然洞穴中燕子每天都会发出不同的叫声。我认为，更换外声或播放多个外声将不会对增长造成负面影响的，而会作出正面的贡献。
Swiftlet is an animal possess capability of location orientating just like the pigeon, with their build-in compass or GPS, they do recognize where their home is and which direction to go home once they have chosen a BH for nesting, there is a small memory of orientation programmed in their mind, this is also how they can find they own unique nest easily in dark space among thousands of nest.
For experiment, if you turn off external sound in a tenanted BH, those existing tenant will still come back as usual. But without external sound, your BH if it is not highly populated one will not be inviting any new birds to become new tenant even your own young swiftlet.
External sound is just tool for promoting or advertising your BH, draw attention and invite young swiftlet to visit BH, whether they decide to stay or next door which will be depending on your BH design and internal factors.
External sound is not the recognition mark for homing. In fact sound called by real swiftlet in natural cave will vary from time to time. I do believe that change of sound or play more than one sounds will not cause any negative impact to the growth but will contributing in positive side.
有些燕农可能担心，如果他们播放两个不同的外部声音，或在外声已经失去了效应后更换现有的外声时，这些燕子会感到困惑或者不能够识途回家。
燕子是一种拥有宛如鸽子方向定位能力的动物，他们拥有已天生具来的‘指南针或GPS’，一旦他们选择了一间燕屋落脚，他们会认得是在哪个方向回家，因为在他们的记忆中已经编程了定位，这也是为何他们可以在拥有成千上万颗窝的黑暗的空间找到他们自己唯一的窝。
做一个小实验，如果你在一间已有燕窝的燕屋关掉外声，这些现有燕子将仍然像往常一样回来。只是如果没有外部声音，你的燕屋如果不是已有大燕群的话将不会吸引新的燕子甚至你自己的小燕子成为新的住客。
外声作用是推广或宣传你的燕屋，吸引燕子注意并邀请年轻的燕子到访燕屋的工具，他们是否选择居留你的燕屋或隔壁的将与燕屋设计和内部因素相关。
外部声音不是识途标志，实际上在天然洞穴中燕子每天都会发出不同的叫声。我认为，更换外声或播放多个外声将不会对增长造成负面影响的，而会作出正面的贡献。
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