n.
a small amount of liquid food
同义词：sup
the act of swallowing
"one swallow of the liquid was enough"
同义词：drinkdeglutition
small long-winged songbird noted for swift graceful flight and the regularity of its migrations
Foraging behaviour of Tree Swallows over acidified and nonacidic lakes
Fitness loss and germline mutations in barn swallows breeding in Chernobyl.
Immunocompetence of Nestling Barn Swallows in Relation to Brood Size and Parental Effort
Ectoparasitism as a Cost of Coloniality in Cliff Swallows (Hirundo Pyrrhonota)
Carotenoids, sexual signals and immune function in barn swallows from Chernobyl.
Immune Defense and Host Sociality: A Comparative Study of Swallows and Martins
Climate change has affected the breeding date of tree swallows throughout North America
Immunocompetence, ornamentation, and viability of male barn swallows (Hirundo rustica)
INTENSE NATURAL SELECTION ON BODY SIZE AND WING AND TAIL ASYMMETRY IN CLIFF SWALLOWS DURING SEVERE WEATHER
Nest-Site Characteristics, Reproductive Success and Cavity Availability for Tree Swallows Breeding in Natural Cavities
