三月三，燕归来，农村俗语“燕知寒门，狗知新婿”，有道理吗？

导读：三月初三，燕子归来。农村有句俗语“燕知寒门，狗知新婿”，这到底有没有道理呢？

尚未到农历三月，天气回暖气温回升，门前水渠已有不少燕子。它们开始啄泥筑巢，有的住进旧巢，有人疑惑是否是去年的燕子，便给其腿栓红绳，来年那只带红绳的燕子果然准时飞回。

如今正是燕子辛勤筑巢的时节，它们把泥土啄进嘴里，飞到水边浸湿，再加上唾液，形成粘合力强的材料，让燕窝牢固。这是个复杂工程，两只燕子需花费很多精力时间，看着忙碌的燕子，像极了我们，还有“燕知寒门”的俗语呢。

燕子是益鸟和喜爱的富贵鸟，也叫有灵性的鸟。它只是普通候鸟，随节气变换忙碌，天敌多易被攻击，便选择让人类保护，几千年来和睦居住，避开天敌得安全。

燕子筑巢并非嫌贫爱富，而是考虑自身安全。居住处要安全宽敞，房屋需坚固，繁衍时还喜欢安静，和睦家庭符合这些，其乐融融景象受燕子青睐，更乐意安家，符合家和万事兴。

奇怪的是，农村土狗虽不金贵，却有很多本领。看门护院很棒，对新女婿不狂吠咬人还欢迎，好像有未卜先知本领。其实是因为土狗嗅觉发达，熟悉家庭成员气味。

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