RMC01JGD–Tree Swallow (Tachycineta bicolor), Grand Teton National Park, Wyoming, USA, North America
RMP7RX56–Tree swallow (Tachycineta bicolor) flying, Iowa, USA
RMCNRYK3–tree swallow (Tachycineta bicolor), flying at a pond, USA, Florida
RMF95YJ2–Tree swallow (Tachycineta bicolor), male, singing in the rain, Lac Le Jeune, British Columbia.
RM2JAD31D–Tree Swallow (Tachycineta bicolor)
RMMKGBMD–A tree swallow (Tachycineta bicolor) near Beaverhill Lake, Alberta, Canada.
RFMY74CH–Tree swallow (Tachycineta bicolor) sitting on a nesting box in Julia Butler Hansen National Wildlife Refuge
RMG04Y81–Tree Swallow - Tachycineta bicolor
RME0BHCJ–Tree Swallow, Tachycineta bicolor, male
RMB2B4J7–Tree Swallow (Tachycineta bicolor) nesting in a tree cavity
RM2G08CHP–Tree Swallow, Tachycineta bicolor, perched on a reed with green background
RMD8TR0N–A perched male tree swallow (Tachycineta bicolor), Lee Metcalf National Wildlife Refuge, Montana
RMM5DW6Y–Tree Swallow, Tachycineta bicolor, Hirundinidae, Swallow, bird, animal, Waterton Lakes National Park, Alberta, Canada
RMERBF0P–tree swallow (Tachycineta bicolor)
RM2BHB2B4–Male tree swallow (Tachycineta bicolor) perched on rotten tree stump, Kellogg Lake, Snohomish County, Washington State, USA
RMEB12W1–Tree Swallow (Tachycineta bicolor) perched on a twig at Buttertubs Marsh, Nanaimo, BC, Vancouver island, Canada in April
RFT8CT43–IRVINE, CALIFORNIA - MAY 10, 2019: Audubon volunteer uses a micrometer to measure a Tree Swallow (Tachycineta bicolor) chick at the San Joaquin Wildli
RFBM3XXH–Tree Swallow, Tachycineta bicolor
RFD1NRYJ–The Tree Swallow (Tachycineta bicolor),
RF2X4ETXA–Tree swallow sitting on barbed wire fence, Tachycineta bicolor, Kentucky
RMMXG24A–Tree swallow (Tachycineta bicolor) flying, Iowa, USA
RMCNRYK4–tree swallow (Tachycineta bicolor), sitting on a twig, USA, Florida
RME1WHEW–Tree Swallow, Tachycineta bicolor, hovering in Saskatchewan, Canada
RM2JAD31K–Tree Swallow (Tachycineta bicolor)
RMMKY9K7–A tree swallow (Tachycineta bicolor) near Beaverhill Lake, Alberta, Canada.
RFMY74TH–Tree swallow (Tachycineta bicolor) sitting on a nesting box in Julia Butler Hansen National Wildlife Refuge, lateral view
RM2GGKJ70–Nesting box for Tree Swallow (Tachycineta bicolor). Portland, Oregon, USA.
RME0H320–Tree Swallow, Tachycineta bicolor, male
RMB2C739–Tree Swallow Tachycineta bicolor nesting in a tree cavity
RMC2AK3C–A Tree Swallow, Tachycineta Bicolor, landing at its nesting box.
RMD8TR09–A perched male tree swallow (Tachycineta bicolor), Lee Metcalf National Wildlife Refuge, Montana
RFMCCD7P–Little Canada, Minnesota. Gervais Park. Male Tree swallow, Tachycineta bicolor, watches as the female Swallow brings material in for the new nest they
RMERBF0T–tree swallow (Tachycineta bicolor)
RMGHXYJY–Tree swallow (Tachycineta bicolor) perched, Bombay Hook NWR, Delaware, USA
RMB50Y51–Tree Swallow Tachycineta bicolor preening on fence post bordering farmland near Henry's Lake Park Montana in July
RFT8CT3K–IRVINE, CALIFORNIA - MAY 10, 2019: Audubon volunteer uses a micrometer to measure a Tree Swallow (Tachycineta bicolor) chick at the San Joaquin Wildli
RFBM48KY–Tree Swallow, Tachycineta bicolor
RFD7R1CJ–Tree Swallow (Tachycineta bicolor), sitting on a nest built in a fence post Cyprus hills, Alberta
RF2X4ETWG–Tree swallow sitting on barbed wire fence, Tachycineta bicolor, Kentucky
RFMXG25A–Tree swallow (Tachycineta bicolor) flying, Iowa, USA
RM2E1P319–Tree swallow (Tachycineta bicolor) vocalizing, Wallowa Valley, Oregon.
RME1WHET–Tree Swallow, Tachycineta bicolor, perched on barbed wire in Saskatchewan, Canada
RM2JAD31H–Tree Swallow (Tachycineta bicolor)
RMMKGBKW–A tree swallow (Tachycineta bicolor) near Beaverhill Lake, Alberta, Canada.
RME46AEH–Tree Swallow (Tachycineta bicolor)
RF2G72N3N–Juvenile tree swallow perched Tachycineta bicolor close up / closeup
RME0H382–Tree Swallow pair, Tachycineta bicolor
RM2PJ7FCB–Tree Swallow, Tachycineta bicolor
RMC2AK32–A Tree Swallow, Tachycineta Bicolor, landing at its nesting box.
RMD5R1JD–A Tree Swallow (Tachycineta bicolor) perched on barbwire, Ninepipe National Wildlife Refuge, Montana
RFMCCD7C–Little Canada, Minnesota. Gervais Park. Female Tree Swallow, Tachycineta bicolor, bringing nesting material to build a nest in the nesting box.
RMB50FY5–Tree Swallow Tachycineta bicolor resting on fence post bordering farmland near Henry's Lake Park Montana in July
RFT8CT40–IRVINE, CALIFORNIA - MAY 10, 2019: Audubon volunteer uses a micrometer to measure a Tree Swallow (Tachycineta bicolor) chick at the San Joaquin Wildli
RFBM40B5–Tree Swallow, Tachycineta bicolor
RFMDFNB0–Two swallows at the arrival of spring ... (Tachycineta bicolor)
RFM963ME–Birds of North America, tree swallow, tachycineta bicolor
RFMXG23E–Tree swallow (Tachycineta bicolor) flying, Iowa, USA
RM2E1P32T–Tree swallow (Tachycineta bicolor) on a fence, Wallowa Valley, Oregon.
RFBFH0KN–Tree Swallow (Tachycineta bicolor) in nest box. Minnesota. North America.
RMC3K213–A juvenile Tree Swallow, Tachycineta bicolor, perched on a rail. Meadowlands, Richard DeKorte Park, Lyndhurst, New Jersey, USA.
RF2G8EEAC–Tree Swallow (Tachycineta bicolor), DeSoto National Wildlife Refuge, Iowa
RFMCCD72–Little Canada, Minnesota. Gervais Park. Male Tree Swallow, Tachycineta bicolor, bringing nesting material to his mate to build a nest in the nesting b
RMD8AANY–Tree swallow (Tachycineta bicolor)
RMGHXYK3–Tree swallow (Tachycineta bicolor) at nest box, Bombay Hook NWR, Delaware, USA
RMB50RE3–Tree Swallow Tachycineta bicolor preening on fence post bordering farmland near Henry's Lake Park Montana in July
RFT8CT3J–IRVINE, CALIFORNIA - MAY 10, 2019: Audubon volunteer uses a micrometer to measure a Tree Swallow (Tachycineta bicolor) chick at the San Joaquin Wildli
RFBM3XTN–Tree Swallow, Tachycineta bicolor
RFMDFNBW–Two swallows at the arrival of spring ... (Tachycineta bicolor)
RMBBJD20–Tree Swallows (Tachycineta bicolor) jockeying for position over their water source.
RFMXG22T–Tree swallows (Tachycineta bicolor) near bird house, Iowa, USA
RM2E1P30K–Tree swallow (Tachycineta bicolor) on a fence, Wallowa Valley, Oregon.
RME1WFJ2–Tree Swallow (Tachycineta bicolor), Merritt, British Columbia
RF2E9N8MF–A Tree Swallow (Tachycineta bicolor) perched on limb in the marsh.
RMMKGBMJ–A tree swallow (Tachycineta bicolor) near Beaverhill Lake, Alberta, Canada.
RF2F89AK6–A Tree Swallow (Tachycineta bicolor) perched on a wire fence
RF2G72N3P–Juvenile tree swallow perched Tachycineta bicolor close up / closeup
RMEEX189–Tree Swallow, Tachycineta bicolor, male perched on birdhouse
RFCFFD7E–Tree Swallow (Tachycineta bicolor) nesting in dead tree Yellowstone NP
RF2J6G6E3–tree swallow pairs prepare their nests in a nest box (tachycineta bicolor)
RF2G8EEAA–Tree Swallow (Tachycineta bicolor), DeSoto National Wildlife Refuge, Iowa
RFMCCD8G–Little Canada, Minnesota. Gervais Park. Male Tree Swallow, Tachycineta bicolor, bringing nesting material to his mate to build a nest in the nesting b
RMD8AEBW–Tree swallow (Tachycineta bicolor) at nesting cavity.
RMGHXYK9–Tree swallow (Tachycineta bicolor) on small branch, Bombay Hook NWR, Delaware, USA
RMB50TTP–Tree Swallow Tachycineta bicolor resting on fence post bordering farmland near Henry's Lake Park Montana in July
RFT8CT35–IRVINE, CALIFORNIA - MAY 10, 2019: Audubon volunteer puts a leg band on a Tree Swallow (Tachycineta bicolor) chick at the San Joaquin Wildlife Sanctu
RMB15NK3–Tree Swallow Singing ( Tachycineta bicolor ) E USA, by George E Stewart/Dembinsky Photo Assoc
RM2GMBX1F–A Tree Swallow (Tachycineta bicolor) perches on a post in the early morning summer sunlight.
RF2R5AJYF–Tree swallow bird Tachycineta bicolor singing while perching on a branch with a blue sky in the background
RMMXG24N–Tree swallow (Tachycineta bicolor) near bird house, Iowa, USA
RM2E1P32E–Tree swallow (Tachycineta bicolor) on a fence, Wallowa Valley, Oregon.
RFT9GG93–Tree swallow, Tachycineta bicolor, near Dawson Creek, British Columbia, Canada.
RF2JDDY0D–Tree Swallow, Tachycineta bicolor, perching on a barbed wire fence in a field. Small bird.
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