a large flock of tree swallows flutters past a crescent moon and across a burnished sky. - 樹燕 個影片檔及 b 捲影像00:25
tree swallow hovers repeatedly at numbered nest box hole as defender blocks entry - 樹燕 個影片檔及 b 捲影像00:20
tree swallow repeatedly tries to enter numbered nest box as defender holds the hole - 樹燕 個影片檔及 b 捲影像00:11
tree swallow launches from nest box roof to intercept approaching rival in slow motion - 樹燕 個影片檔及 b 捲影像00:17
tree swallow preens feathers atop slender metal t-post against warm pastel field - 樹燕 個影片檔及 b 捲影像00:12
tree swallow lands on weathered wooden fence post in bright green spring meadow - 樹燕 個影片檔及 b 捲影像00:20
the tree swallow (tachycineta bicolor), a bluebird poses on the wooden balcony of a house with a blue background - 樹燕 個影片檔及 b 捲影像00:05
the tree swallow (tachycineta bicolor), a bluebird poses on the wooden balcony of a house with a blue background - 樹燕 個影片檔及 b 捲影像00:09
the tree swallow (tachycineta bicolor), a bluebird poses on the wooden balcony of a house with a green background - 樹燕 個影片檔及 b 捲影像00:28
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:19
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:24
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:07
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:20
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:11
white-rumped swallow (tachycineta leucorrhoa) perched on branch. foraging to build a nest. - 樹燕 個影片檔及 b 捲影像00:20
tree swallow attempts to catch feather for nest in mid-air, succeeds on second attempt, blue sky behind, usa - 樹燕 個影片檔及 b 捲影像00:07
male and female feeding their recently fledged youngster until its old enough to forage own on its own. - 樹燕 個影片檔及 b 捲影像00:54
aerial: drone panning shot of tree swallow flying over rippled lake - arvada, colorado - 樹燕 個影片檔及 b 捲影像00:06