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Zimmer's Flycatcher [assimilis]

Tolmomyias assimilis [assimilis] (= Tolmomyias assimilis) (Pelzeln, A 1868)

Related taxa:
Partial list of sound recordings available from xeno-canto & macaulaylibrary.org.
Species name Recordist Date Location Remarks Cat.nr.
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Paul Coopmans 1998-11-00 Sucumbíos: 'La Selva Jungle Lodge', n bank Río Napo, Sucumbíos (Ecuador) (220 m) song -

playback-used:no

264698
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis sp. Dušan M. Brinkhuizen 2023-08-20 Pachicutza (near Pincho), Yantzaza, Zamora Chinchipe, El Pangui (Ecuador) (1000 m) alarm call, call -

Recordings of an adult bird from stunted forest along a gold mining track (location coordinates are precise, elevation around 1000 m). I've recorded this song before at Yankuam, in a similar nutrient-poor soil forest, back in 2010, and finally, I was able to reconnect with this 'mystery' taxon and got recordings of song, excitement calls, and trill call. For sure visually much like a Zimmer's (Yellow-margined) Flatbill type, but song and calls very different from Ecuador's lowland race obscuriceps. Vocalizations approach subspecies clarus from C Peru better. No doubt this is a new taxon to Ecuador, and perhaps with further work on Tolmomyias assimilis-complex, even split worthy.

825156
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis paraensis Tayler Brooks 2011-08-11 Cristalino Jungle Lodge, MT, Mato Grosso (Brazil) (200 m) song (A) - In primary forest not far from river edge. High in canopy. 108023
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Ricardo Gagliardi 2022-01-11 Caracaraí, Roraima, Caracaraí (Brazil) (50 m) call - [sono] 835973
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis JAYRSON ARAUJO DE OLIVEIRA 2025-08-20 Santa Fé do Araguaia, Santa Fé do Araguaia, Tocantins, Santa Fé do Araguaia (Brazil) (200 m) call - [also] [sono] 1035547
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Peter Boesman 2014-03-11 Mozeskreek area, W Suriname, Sipaliwini (Suriname) song - [also] [sono] 272028
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Andrew Spencer 06-01-2011 Yasuní Research Station, Parque Nacional Yasuní, Orellana, Napo (Ecuador) (250 m) calls (A) - weird harsh agitated calls from one flying bird chasing another, then calls from the bird that was chasing the other, given while perched. 70222
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps John V. Moore 1994-03-00 Sucumbíos: 'La Selva Jungle Lodge', n bank Río Napo, Sucumbíos (Ecuador) (220 m) song -

Moore et al. 2013: Bird Sounds of Ecuador DVD Edited

playback-used:no

258822
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps John V. Moore 2001-09-00 Sucumbíos: 'La Selva Jungle Lodge', n bank Río Napo, Sucumbíos (Ecuador) (220 m) song -

Moore et al. 2013: Bird Sounds of Ecuador DVD

playback-used:no

258823
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Peter Boesman 2010-07-25 ACTS Explornapo, Loreto, Loreto (Peru) (120m m) song - [sono] 270983
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis sp. Dušan M. Brinkhuizen 2023-08-20 Pachicutza (near Pincho), Yantzaza, Zamora Chinchipe, El Pangui (Ecuador) (1000 m) song -

Recordings of an adult bird from stunted forest along a gold mining track (location coordinates are precise, elevation around 1000 m). I've recorded this song before at Yankuam, in a similar nutrient-poor soil forest, back in 2010, and finally, I was able to reconnect with this 'mystery' taxon and got recordings of song, excitement calls, and trill call. For sure visually much like a Zimmer's (Yellow-margined) Flatbill type, but song and calls very different from Ecuador's lowland race obscuriceps. Vocalizations approach subspecies clarus from C Peru better. No doubt this is a new taxon to Ecuador, and perhaps with further work on Tolmomyias assimilis-complex, even split worthy.

825154
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis sp. Dušan M. Brinkhuizen 2023-08-20 Pachicutza (near Pincho), Yantzaza, Zamora Chinchipe, El Pangui (Ecuador) (1000 m) song -

Recordings of an adult bird from stunted forest along a gold mining track (location coordinates are precise, elevation around 1000 m). I've recorded this song before at Yankuam, in a similar nutrient-poor soil forest, back in 2010, and finally, I was able to reconnect with this 'mystery' taxon and got recordings of song, excitement calls, and trill call. For sure visually much like a Zimmer's (Yellow-margined) Flatbill type, but song and calls very different from Ecuador's lowland race obscuriceps. Vocalizations approach subspecies clarus from C Peru better. No doubt this is a new taxon to Ecuador, and perhaps with further work on Tolmomyias assimilis-complex, even split worthy.

825153
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis sp. Dušan M. Brinkhuizen 2023-08-20 Pachicutza (near Pincho), Yantzaza, Zamora Chinchipe, El Pangui (Ecuador) (1000 m) alarm call, call, song -

Recordings of an adult bird from stunted forest along a gold mining track (location coordinates are precise, elevation around 1000 m). I've recorded this song before at Yankuam, in a similar nutrient-poor soil forest, back in 2010, and finally, I was able to reconnect with this 'mystery' taxon and got recordings of song, excitement calls, and trill call. For sure visually much like a Zimmer's (Yellow-margined) Flatbill type, but song and calls very different from Ecuador's lowland race obscuriceps. Vocalizations approach subspecies clarus from C Peru better. No doubt this is a new taxon to Ecuador, and perhaps with further work on Tolmomyias assimilis-complex, even split worthy.

825155
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis paraensis Jeremy Minns 2003-11-26 Cristalino Jungle Lodge, MT, Mato Grosso (Brazil) (260 m) song -

terra firme forest - in emergent

bird-seen:yes

playback-used:no

340267
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Juan Freile 2021-12-05 Mirador de Lumbaqui, Sucumbios, Gonzalo Pizarro (Ecuador) (650 m) song -

In a mixed species flock in the canopy of secondary forest borders. Subspecies assigned by distribution.

1076651
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Fabrice Schmitt 2013-06-11 San Lorenzo, Loreto, Loreto (Peru) (160 m) song -

playback-used:no

188077
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Juan Freile 2021-12-05 Mirador de Lumbaqui, Sucumbios, Gonzalo Pizarro (Ecuador) (650 m) begging call, call -

In a mixed species flock in secondary forest edge, possibly with a begging juvenile.

1076661
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis examinatus Alex Lees 2014-03-01 Serra do Navio, AP, Amapá (Brazil) (170 m) song -

with a mixed flock in terra firme

bird-seen:yes

playback-used:yes

168673
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Juan Freile 2021-12-05 Mirador de Lumbaqui, Sucumbios, Gonzalo Pizarro (Ecuador) (650 m) song -

Possibly one adult with a begging juvenile. Subspecies assigned by distribution.

1076654
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis obscuriceps Manuel Sanchez-Nivicela 2021-07-17 Apu Napo Lodge, Orellana, Orellana, Tena (Ecuador) (340 m) call -

amplified, hpf and espectral edition for insects sounds

993499
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Jacob Wijpkema 2025-05-27 East Manuripi, Departamento de Pando, Manuripi (Bolivia) (200 m) song - [sono] 1026604
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis calamae Jeremy Minns 2003-03-28 Guajará-Mirim, RO. c.20 km SE of Pakaas Palafitas Lodge, Rondônia (Brazil) (130 m) call -

Terra firme forest - individual recorded in XC97067, now after playback

bird-seen:yes

playback-used:yes

283330
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Audrey BOUTRY 2024-11-17 Petit Saut lake, Saint-Elie (French Guiana) (30 m) song - [sono] 950086
xeno-canto.org
Zimmer's Flatbill - Tolmomyias assimilis Peter Boesman 2010-07-19 Allpahuayo - Mishana Reserve, Loreto, Loreto (Peru) (120m m) song -

ID certainty 80%

270981
xeno-canto.org
Note: a maximum of 20 records are shown. For more recordings of this species, as well as maps, sonograms, and advanced searches, please visit xeno-canto & macaulaylibrary.org.

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