That's the theory, anyway. Personally I think turkey tends to be dry and a little flavorless, and I'd much rather eat chicken, duck, or goose.
The pardon is also used as a satirical roast on the scandals of the time.
Here's the source.
I'm not making as much of this up as you'd probably think.
In portuguese, the bird is also named after a country, but a different one: Peru
They are called turkeys because back in the day Europeans imported a similar bird from Turkey that actually came from India (which is why some countries call them Indian birds - including France) and some of them thought they originated in Turkey. The wild turkeys in North America resembled them, so they got called turkeys too.
I only know the snood as something that covers a woman's hair done up in a bun.