Skinks are small lizards (Scincidae) that populate the tropical gardens. This skink,on our deck screen, is enlarging (blowing out) his neck.
It is a time of love for these skinks. Incidentally "Skink" is the nickname of a weird and wacky character in novels by Carl Hiaasen. I'm currently reading Star Island. Skink is also known as "The Governor". In previous books he has resigned as Florida's Governor and fled to the Everglades where he continues to live off the land by eating freshroad kill from nearby highways and fights against unscrupulous developers. Its great fun.