Opal-crowned Tanager

Blue-and-black tanager with a bright creamy-white crown and rump patches; otherwise deep blue with black patches from the tail to the head. Compared to the similar Opal-rumped Tanager, this species has a distinctive whitish crown and a blue (not reddish) belly; the latter can be helpful for identification from below as it moves through the canopy with mixed species tanager flocks.

Link: https://ebird.org/species/opctan1
Photo Location: Ecuador