Living alongside these substantial mammals were flocks of grassland or prairie birds ... Males sit on prominent perches and belt out bright whistling tunes. The bright yellow western meadowlark ...

Reptiles in open habitats evolved brighter colors over time. This helped them reflect sunlight and survive climate change.

Parks Canada attempted to reintroduce the black-footed ferret to Grasslands National Park by releasing 74 animals in 2009. Soon after, wild-born ferrets were seen at the park, sparking hopes that ...

These charismatic, rabbit-size rodents live on North America's prairies and open grasslands in only a fraction ... listening posts near exits, so animals can safely keep tabs on the movements ...

But during the last ice age when sea levels were much lower, the caves were the high-and-dry habitat for a completely different group of animals ... in patches of thick, grassland vegetation ...

During the dry season some grassland gazelles will even take to the African bush in search of water. Gazelles are nimble and beautiful animals, with a variety of stripes and markings that ...

You can find both venomous and non-venomous snakes in Colorado, each with its own habits and features. Some snakes are shy ...