Tree Swallow by Turk Images Tree Swallow (Tachycineta bicolour) alert and guarding its nest territory on a fence row bordering a grassy meadow along the south end of Beaverhill Lake east of Tofield, Alberta, Canada.
The green background is the grassy meadow.
15 May, 2017.
Slide # GWB_20170515_8313.CR2
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