Tree Swallow

Construction Difficulty

moderate difficulty moderate

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Nesting Range

Tree Swallow Range
Source: Birds of the World

Nesting Habitat

  •  icon Grassland
  •  icon Lake
  •  icon Marsh
  •  icon Shore

Attach Nest Box To

  • Pole icon Pole

Known Nesting Period

Not Nesting
Some Nesting Occurrence
Nesting in Most of Range
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Source: Birds of the World

Nest Box Placement

Height Range From Ground

5ft
6ft
5–6 feet

Spacing Between Nest Boxes

35 feet

Facing

Entrance hole facing visualization
South or East

Nest Box Measurements

Entrance Hole Size

Entrance hole size visualization 1 3/8"

Nest Box Depth (inside)

Nest box depth visualization 9"

Nest Box Width and Length

Nest box width and length visualization 5 1/2" 5 1/2"

Helpful Tips

  • Tree Swallows will do well in areas with high unmowed grass, preferably near water.
  • If competition with bluebirds arises over nest boxes, place another box nearby (20–25' away) for the bluebird.
  • Tree Swallows benefit from a "fledgling ladder" inside the nest box, under the entrance hole. This can be a series of shallow horizontal kerf cuts (which looks like a ladder) or a piece of hardware cloth stapled to the inside of the box. A fledgling ladder helps nestlings get their footing and climb out of the box.
  • Clean out the nest box once the young leave. Tree Swallows typically only attempt to raise one brood, and cleaning the box after they're finished makes it available for other species (e.g., bluebirds) that may attempt a second nest attempt.
  • Install a predator guard on the pole to keep predators out.
  • Tree Swallows line their nest with feathers, and more feathers can enhance chick survival. You can provide chicken feathers in the area for Tree Swallows to add to their nests, and they may even snatch them up before they hit the ground.