What is the name of a children’s book about a winged pony named Rico?

Sparkles: What is the name of a children’s book about a winged pony named Rico?
I can’t remember the author or title of this book. I remember a basic synopsis in that a little girl and her family live in an apartment in a big city when they receive a mysterious crate from an old man. It turns out to be a winged pony and the little girl and her new pony have fun adventures together, ending with a trail ride in the mountains. The only specific detail I can recall is the pony’s name Rico, because it’s the little girl’s favorite name.

Answers and Views:

Answer by Wizzerd
Does it include sparky and wonder squid in the story too??

Answer by sallyotas
I can’t find this one, but the site below specialises in book identification. Good luck!