Yes, welcome, Knulp, & thank you for the picture of the jay.
I agree that the Eurasian Jays seen in Estonia are lovely, but I must disagree with Alice's statement about jays that we Americans "usually just see little grey blobs with a stripe on their sides." We actually have several species of jays. Along the west coastal areas of the USA where Alice is located, the jays seen are the Gray (or grey) Jay-- a lovely grey, very tame bird also called a "camp robber" or a "whiskey jack." There is also the Pinyon Jay (a western mountain states species), which is a blue-grey color; Stellar's Jay, another western mountain states species which should be found near Alice's area (bright blue body & black, crested head); the Western Scrub-Jay of the western states lowlands areas (blue with grey around eyes & on back); & then the most wide-spread jay over about 2/3 of the country, the Blue Jay (in my area, central USA), a beautiful blue bird with a crested head, some white on wings, a soft white-grey belly, & some black striping near the eyes. I am familiar with the Gray Jay (these will come down & actually eat out of your hand, they are fearless), the Pinyon Jay, & the Stellar's Jay because I grew up in Montana, a northwestern state where all 3 of these are found. I now am surrounded by Blue Jays as I live in the center of the USA in Missouri now.
© Gary Mueller/PFW
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There are actually a few more species located in small areas in the southern states. If interested, info is here: http://www.allaboutbirds.org/guide/browse_tax/20/
Sorry for such a long post, I just like jays, although many people consider them a pest in neighborhoods. They are LOUD!