Showing posts with label goshawk. Show all posts
Showing posts with label goshawk. Show all posts

Thursday, 25 February 2021

European Goshawk (Astur gentilis)

OTHER NAMES: Goshawk
Latin Etymology: Astur ("hawk") gentilis ("noble/gentle")
Juvenile Northern Goshawk (Astur gentilis - unknown subspecies) in Norfolk - February 2021

Featured Subspecies: (Presumably) Accipiter accipiter gentilis
Weight: 0.6-1.4kg  /  Length: 55-61cm  /  Wingspan: 110cm
UK GREEN LIST IUCN Red List: Least Concern

It seems somewhat paradoxical that one of the most widely distributed of all raptors - found throughout Europe and Northern Asia has been one of the most difficult to catch up with. In part this is due to it's lifestyle; it's a dedicated forest hunter that is only easily seen during the breeding season when they display above the forest, but also it's history in the UK has shaped how easily seen it is. In the Middle Ages it was a highly regarded species - only the nobility were allowed to use them in falconry, but as habits changed to gamekeeper lead shooting, they were now viewed as a menace. The population was all but eradicated, and only supplemented by the release (both accidentaly and intentional) of falconers birds was it able to survive. Whether this means the UK population is of mixed subspecies heritage is unclear. However, the threat of gamekeepers remains, and after the Hen Harrier is potentially the most persecuted raptor in the British Isles.

Related Species:
Order: Accipitriformes
Family: Accipitridae
Genus: Accipiter
Subspecies: 
A. g. gentilis, A. g. arrigonii, A. g. buteoides, A. g. albidus, A. g. schvedowi, A. g. schvedowi, A. g. fujiyamae, A. g. atricapillus, A. g. laingi, A. g. apache

 - Sighting Locations -
UNITED KINGDOM - A widespread but scarce and secretive resident.
 - Seen in Norfolk (undisclosed site) .

Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto
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Saturday, 27 August 2016

Crested Goshawk (Lophospiza trivirgatus)

OTHER NAMES: Asian Crested Goshawk, Ceylon Crested Goshawk
Latin Etymology: Accipiter ("to grasp") lophospiza ("crest hawk")

Adult Female Crested Goshawk (subspecies L. t. indicus) at Kuala Lumpur, Malaysia - July 2016

Featured Subspecies: Accipiter trivirgatus indicus
Weight: 224-450g  /  Length: 30-46cm  /  Wingspan: 65-85cm
NO UK STATUS IUCN Red List: Least Concern

The Crested Goshawk is a medium sized species of raptor that I came across entirely unexpectedly - we were walking along the road from our Kuala Lumpur hotel as we did every day but just as we crossed an overpass, there was a large amount of squawking from house crows around - clearly something they didn't like was around.  Upon looking into the tree above me, my initial impression was of a huge thrush - the bold streaking on it's chest certainly very reminiscent of a song thrush.  However, it quickly became apparent that it was this impressive raptor species. As is usual with raptors, the female is the larger of the two.

Related Species:
Order: Accipitriformes
Family: Accipitridae
Genus: Lophospiza
SUBSPECIES: A. t. indicus, A. t. peninsulae, A. t. layardi, A. t. formosae, A. t. trvirgatus, A. t. niasensis, A. t. javanicus, A. t. microstictus, A. t. palawanus, A. t. extimus, A. t. castroi

 - Sighting Locations -
MALAYSIA - Malay - Helang Sewah Besar ("Large Sparrow-hawk Eagle")
A widespread resident
 - MALAYSIA/SINGAPORE 2016 TRIP: A single bird in Kuala Lumpur

Further Notes: BirdForum Opus, IUCN Red ListRSPB, Wikipedia, Xeno-canto   .