Machu Picchu Mountain is greener than the Huayna Picchu trail and has many kinds of wild orchids and birds that highlight the path. It is higher than Huayna Picchu, topping out at 10,104 feet.
However, when the female Mallard duck lay eggs, her diet changes to include more animal life than plant matter. In general, Mallards typically eat more plants than animals, and they also eat more plants in the fall and winter seasons. Food selection also has to do with the shape and style of the Mallard's bill.
In winter, toads in captivity do eat significantly less, sometimes not eating at all.Toads are natural gluttons and this is their nature. While it is probably possible to overfeed a toad, I've yet to see it in my 27 years of toad keeping.