mourning dove
Refers specifically to the North American species Zenaida macroura; not a general term for doves.
A mourning dove came to the garden and was cooing softly.
Katakana spelling is standard for this bird name; the kanji form 嘆鳩 is rare.
Kanji spelling is seldom used; the word is almost always written in katakana.
The Japanese name ナゲキバト is a calque of the English 'mourning dove', combining 嘆き (なげき, 'mourning') and 鳩 (はと, 'dove').