首先蟾蜍(Toad, 或者你當係青蛙 Frog) 就算冇地震都會大規模遷移,
….So far this year toads have been having a frustrating time. They usually emerge from their winter hibernation sites from February onwards and migrate along the same routes to the same ponds each year to mate. Toads are cautious animals, though, because they do not want to risk breeding in ponds that later get hit by frost, which kills off the spawn. So they wait for a few days of temperatures above about 5C (41F) with warm nights as the signal to start their travels.
The wildlife charity Froglife collects reports of toad migration from the public across the UK, and their survey shows that peak migrations so far have only happened in the far South West of the country. Although average temperatures have been good, the toads also need rain, and this has been in fairly short supply over the past several weeks. This is because high pressure has been dominating the weather, especially in the southern half of Britain. Last month’s rainfall for England and Wales was about a third lower than normal, in the sunniest February on record. March began much the same way, but conditions are now shifting to an Atlantic airflow, bringing some very wet and stormy weather.
即係話蟾蜍會好小心等待天氣回暖有雨先去生蛋, 以免用黎養科蚪既池塘再結冰或者中途乾塘。 另外蟾蜍係兩棲類, 皮膚乾左就會死, 所以一定要夠濕既天氣先可以遠行。 依兩個因素都係大自然既計時器, 所以一齊去搵地方生蛋既時間可以好接近, 就好以個鬧鐘咁, 條件一到就齊齊上路, 如果唔係, 早左或者遲左就可能搵唔到識合既池塘生蛋, 無法延續下一代而被淘汰, 結果蟾蜍既遷徙咁壯觀。
不過科學精神係講論證, 以上既理論認為蟾蜍遷移係同天氣有關, 但唔可以否定同地震無關。 雖然唔可以完全排除傳媒炒作同迷信, 但由唐山大地震到而家, 中國好多人都認為佢蟾蜍同地震有關連, 現時仍未有科學論証予以否定, 所以信不信由你。