The word "grosbeak", first applied in the late 1670s, is a partial translation of the French grosbec, where gros means "large" and bec means "beak".
(http://en.wikipedia.org/wiki/Grosbeak)
Usually when you're stumped about the origin of some word, google 'X etymology', e.g. 'grosbeak etymology'. You'll get something like http://www.etymonline.com/index.php?search=Grosbeak An etymology of a word is the origin of the meaning of a word.
It’s some kind of finch, a youngster, just out of the nest. The white at the beak and the short tail tells me that. I think it’s a Java Finch or Java sparrow
https://www.youtube.com/watch?v=PkSIP0aAtBY - motion detector with a sprinkler. amazon link
It is so beautiful with a long tail like this bird: https://rumble.com/v417kt-copsychus-malabaricus.html?mref=7gdc&mc=8whwq
Agree about the cage size! https://www.amazon.com/Parakeet-Canary-Cockatiel-Breeder-Utility/dp/B00H0NYEVG The one linked is a good starter size, and is the SMALLEST that I would reccomend. Bigger is always better, but as stated, watch the bar spacing!
You should! They're especially handy here in Florida since there are so many unwanted critters that a little bit of spilled bird seed can attract.
Planting a garden where birds can find the things they need (food, water and shelter) is the best way to get birds to come to your garden. Here's a book on the subject:https://www.amazon.com/Natural-Gardening-Birds-Bird-Friendly-Backyard/dp/1510702474/ref=sr_1_8?ie=UTF8&qid=1485499327&sr=8-8&keywords=attracting+birds+garden+book. There are a lot of good books on the subject at your local library, too.
A bird bath next to a large shrub for protection is a big hit in my garden.