plural of American cliff swallow

Petrochelidon pyrrhonota, a member of the passerine bird family Hirundinidae.

plural of red-rumped swallow

Cecropis daurica, a small passerine bird in the swallow family

Tachycineta thalassina, a small North American passerine bird of the swallow family.

To be forced to retract a prior statement after it has been shown to be disproven; to take back what one has said. / To speak at a low volume due to uncertainty about one's speech; to mumble.

present participle of swallow a bitter pill

simple past tense and past participle of swallow a bitter pill

Third-person singular simple present indicative form of swallow a bitter pill

One instance of an event (such as the arrival of a single bird) does not necessarily indicate a trend.