What type of seed attracts a indigo blue bunting bird?

I have a blue bunting that visits my yard and this is the first spring, but he doesn’t seem interested in my wild bird seed or my finch seed. I also have suet blocks out. Does anyone have any suggestions on what these little critters like? I really would like to keep them coming back and for him to bring his whole family.

You can try here for more information on that.

http://en.wikipedia.org/wiki/Indigo_Bunting

Blue Tits Feeding on Haith’s Suet Blocks

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