| Species name | Recordist | Date | Location | Remarks | Cat.nr. |
| Grey-backed Hawk - Pseudastur occidentalis | Ross Gallardy | 2015-07-07 | El Oro: upper Buenaventura reserve, El Oro (Ecuador) (900 m) | call - pair bird-seen:yes playback-used:no
|
297197 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Robert S. Ridgely | 1991-08-00 | Manabí: Río Ayampe, Manabí (Ecuador) (50 m) | flight calls - Moore et al. 2013: Bird Sounds of Ecuador DVD playback-used:no
|
274916 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Ross Gallardy | 2015-07-07 | El Oro: upper Buenaventura reserve, El Oro (Ecuador) (900 m) | call - pair bird-seen:yes playback-used:no
|
297198 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Bobby Wilcox | 2021-12-24 | Colibri Trail, Rio Ayampe Reserve, Manabí Province, Puerto López (Ecuador) (30 m) | adult, call - About 20m away in lowland tropical forest. Seemingly near nest but nest was never located. bird-seen:yes playback-used:no
|
693017 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 1991-11-16 | El Oro: Reserva Buenaventura 9 km WNW Piñas, El Oro (Ecuador) (900 m) | flight call - Humid forest with clearings. Reference: XXXVIIA 170-173 (Leuocc2).. Krabbe & Nilsson (2003) (ISBN 90-75838-06-9). bird-seen:yes playback-used:no
|
238913 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Juan Freile | 2021-12-19 | Sector El Jaguar, BP Cerro Blanco, Guayas, Guayaquil (Ecuador) (380 m) | call - One bird landed and perched in canopy of Cavanillesia tree.
|
983484 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Mitch Lysinger | 1997-09-13 | Guayas: Cerro Blanco, Guayas & Santa Elena (Ecuador) (300 m) | calls - Moore et al. 2013: Bird Sounds of Ecuador DVD Perched bird playback-used:no
|
260340 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Rainforest Connection | 2019-12-22 | Guayas: Pigio Forest, Cerro Blanco, Guayas & Santa Elena (Ecuador) (140 m) | song - Recording made by the Guardian. bird-seen:no playback-used:no
|
621274 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Paul Noakes | 27 06 2008 | El Caucho, Tumbes reserved zone, Peru (Peru) (00000000 m) | (B) - | 32559 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Peter Boesman | 1993-12-22 | Piñas, El Oro, El Oro (Ecuador) (850 - 950 m) | call - ID certainty 100%. (Archiv. tape 23 side A track 48 seq. A)
|
225123 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Peter Boesman | 1993-12-30 | Machalilla NP, Manabí, Manabí (Ecuador) (0 - 500 m) | call - ID certainty 100%. (Archiv. tape 24 side A track 22 seq. A)
|
225122 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Frank Lambert | 30 Nov 04 | Tumbes Biosphere Reserve , Tumbes (Peru) (? m) | call (B) - | 39053 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Fernando Angulo | 18-12-09 | El Tutumo, Peru (Peru) (350 m) | Call (B) - | 34846 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 2010-08-04 | El Oro: Reserva Buenaventura 9 km WNW Piñas, El Oro (Ecuador) (650 m) | call - Humid forest bird-seen:yes playback-used:no
|
251421 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Jonas Nilsson | 1995-12-06 | Guayas: Cerro Blanco, Guayas & Santa Elena (Ecuador) (50 m) | call - Dry forest. Reference: JN1. Krabbe & Nilsson (2003) (ISBN 90-75838-06-9). bird-seen:yes playback-used:no
|
276423 xeno-canto.org |
| Gray-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 2010-08-04 | , El Oro (Ecuador) | - | 248558 macaulaylibrary.org |
| Gray-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 1991-12-08 | , El Oro (Ecuador) | - | 241980 macaulaylibrary.org |
| Grey-backed Hawk - Pseudastur occidentalis | Andrew Spencer | 31-12-2007 | Buenaventura Reserve, El Oro, El Oro (Ecuador) (1100 m) | calls (B) - calls from one of a pair flying over | 17741 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 1991-12-08 | El Oro: Reserva Buenaventura 9 km WNW Piñas, El Oro (Ecuador) (900 m) | call - Perched. Humid forest with clearings. Reference: XXXIXA 159, 166-168 (Leuocc3).. Krabbe & Nilsson (2003) (ISBN 90-75838-06-9). bird-seen:yes playback-used:no
|
238912 xeno-canto.org |
| Grey-backed Hawk - Pseudastur occidentalis | Ross Gallardy | 2015-07-07 | El Oro: upper Buenaventura reserve, El Oro (Ecuador) (900 m) | call - bird-seen:yes playback-used:no
|
297196 xeno-canto.org |
| Gray-backed Hawk - Pseudastur occidentalis | Fernando Angulo - CORBIDI | 2024-07-24 | , Tumbes (Peru) | - | 621959684 macaulaylibrary.org |
| Gray-backed Hawk - Pseudastur occidentalis | Dusan Brinkhuizen | 2009-09-23 | , Esmeraldas (Ecuador) | - | 203699581 macaulaylibrary.org |
| Gray-backed Hawk - Pseudastur occidentalis | Scott Olmstead | 2025-03-24 | , El Oro (Ecuador) | - | 660329518 macaulaylibrary.org |
| Gray-backed Hawk - Pseudastur occidentalis | Niels Krabbe | 1991-11-16 | , El Oro (Ecuador) | - | 241932 macaulaylibrary.org |
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