Black Falcon vs Red-necked Falcon

Black Falcon

Falco subniger

Large776 gWoodland

The information in this section is based on recent descriptions by several authors (notably, Debus & Davies 2012, Debus & Olsen 2011, Morcombe 2002 and Birds in Backyards n.d.). Size (adult, beak to tail): 45 – 56 cm (average 50 cm), tail makes up about half the length. Note: Females are larger than males - this is a form of sexual dimorphism. Average weight: 833 g (female) 582 g (male). Wing span: 95 –115 cm. Voice: The most common call is similar to the 'cackle' of the peregrine falcon but is slower and deeper – gaak-gaar-gaak. The guttural call is shorter and more rapid when being attacked or when intruders are nearby – gak-gak-gak-gak.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Stuart Harris · CC BY 2.0

Red-necked Falcon

Falco chicquera

Medium208 gWoodland

The red-necked falcon is a medium-sized, long-winged species with a bright rufous crown and nape. It is on average 30–36 cm (12–14 in) in length with a wingspan of 85 cm (33 in). The wings and upper parts are bluish grey and the tail has narrow bars, a broad subterminal black band tipped with white. The wingtip does not reach the tip of the tail at rest. The second and third primaries are the longest and almost equal in length while the first is a fourth the length. The first two primaries are notched. The legs, ceres and eyering are yellow.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Shiv's fotografia · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Black Falcon and Red-necked Falcon.