One phenomenon across the animal kingdom is the nuptial gift, where giving expensive resources is used to prove fitness for mating: https://en.wikipedia.org/wiki/Nuptial_gift

I first came across the concept in the delightful book "Dr Tatiana's Sex Advice to All Creation", which covers the evolutionary biology of reproduction in the form of an advice column with letters from birds, insects, etc: https://www.amazon.com/Dr-Tatianas-Sex-Advice-Creation/dp/08...