Violet-green Swallows / Фиолетово-зелёная американская ласточка / Tachycineta thalassina

Violet-green Swallows (Tachycineta thalassina) are searching for a perfect place to nest. They nested in this very tree last year and by the end of my observation, they were bringing in nesting material and will nest in this tree again this year.