Acadian Flycatcher
Empidonax virescens

All fifteen small flycatchers in the genus Empidonax look so much alike we once believed them to be a single species. With closer observations over time, observers noticed slight differences in wing length, the eye-ring, in choice of habitat, breeding range, their voices, bill color and other features. The Acadian Flycatcher is one such species that we must now puzzle out to identify in the field. As with the other birds in this genus, mistaken IDs are commonplace.
This member of the flycatcher clan spends winters in Central America and northern South America. When spring approaches, they migrate north to find summer homes in the deciduous forests of eastern USA to raise families.
Currently, science does not recognise any subspecies of Acadian Flycatcher (i.e. they are monotypic).
The flying skills possessed by these birds are exceptional. Flying backwards is among its many aerial talents.
To date, my only meetings with this species were with birds migrating north through Texas at South Padre Island.
.
.
.
7 Photos

Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 10:13 |
Location:
Sheepshead Bird Sanctuary |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/800 |
File Name: AcadianFlycatcher_D5X4522_SPI-Sheepshead |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 11:18 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/1500 |
File Name: AcadianFlycatcher_D5X4625_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 12:38 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/4000 |
File Name: AcadianFlycatcher_D5X4867_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 12:38 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/6000 |
File Name: AcadianFlycatcher_D5X4875_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 12:38 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/4000 |
File Name: AcadianFlycatcher_D5X4896_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 12:41 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/2000 |
File Name: AcadianFlycatcher_D5X4907_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |


Acadian Flycatcher(Empidonax virescens) |
Description: The primary (wing) feathers seemed too long for a Least Flycatcher, and the head shape seemed better for the Acadian Flycatcher. It’s hard to tell them apart. It was a bright Sunday on South Padre Island, and I stayed over 9 hours. I started the morning with an hour at Sheepshead Sanctuary and drove to the Convention Centre for the rest of the day, and met a couple of birds new to me. |
Date Taken: 2021:05:02 17:35 |
Location:
Convention Center |
Camera Information: NIKON D5, 800 mm, f/8.0, 1/2000 |
File Name: AcadianFlycatcher_D5X5389_SPI-ConventionCtr |
© 2021 Jack Daynes, shadeTreeImaging.com |

Click map markers to reveal further information