Humans have decoded the language of some birds:
How to decode the secret language of birdsFor centuries, Native Americans have relied on so-called "bird language" to learn the whereabouts of people and other animals that would otherwise remain invisible to the human eye. "A lot of indigenous people have been using bird language to know where mega-predators are," says Pinar Ateş Sinopoulos-Lloyd, co-founder of Queer Nature, who leads courses on bird language. "They are able to decipher how birds communicate and warn each other in the forest."
Today we know that birds have their own languages. But 1400 years ago the Quran said that birds have their own language:
١٦ وَوَرِثَ سُلَيْمَانُ دَاوُودَ ۖ وَقَالَ يَا أَيُّهَا النَّاسُ عُلِّمْنَا مَنْطِقَ الطَّيْرِ وَأُوتِينَا مِنْ كُلِّ شَيْءٍ ۖ إِنَّ هَٰذَا لَهُوَ الْفَضْلُ الْمُبِينُ
Solomon learned the language of birds.
The Quran also says that all animals glorify Allah but we cannot comprehend their languages:
٤٤ تُسَبِّحُ لَهُ السَّمَاوَاتُ السَّبْعُ وَالْأَرْضُ وَمَنْ فِيهِنَّ ۚ وَإِنْ مِنْ شَيْءٍ إِلَّا يُسَبِّحُ بِحَمْدِهِ وَلَٰكِنْ لَا تَفْقَهُونَ تَسْبِيحَهُمْ ۗ إِنَّهُ كَانَ حَلِيمًا غَفُورًا
How could an illiterate man who lived 1400 years ago have known that animals have their own languages?
The Quran (Koran, the book of Islam) contains scientific knowledge that could not have been known 1400 years ago. It ranges from basic arithmetics to the most advanced topics in astrophysics. You are invited to go through those miracles and judge for yourself.