which hawk ?

[Phil Gregory <>]

The elongated thin toe also indicates Collared Sparrowhawk, and the legs looks quite slender, another point in favour of that species

Phil Gregory

ornithological writer/tour leader/tour facilitator

Field Guides / Sicklebill Safaris / Cassowary Tours
PO Box 597
Malanda
QLD 4885
Australia

Ph: +61 7 4096 8063 

Email: m("s2travel.com.au","info");" target="_blank" style="color: rgb(17, 85, 204);" class="">
Website1: http://www.sicklebillsafaris.com OR www.birder.travel

Website 2: http://www.cassowarytours.com.au

On 26 Aug 2020, at 4:54 PM, Judith L-A via Birding-Aus <> wrote:

3 tail pix ATTACHED:

- dorsal

- notch (ventral),

 & showing blue wash

- spread = 12 rectrices

---------- Forwarded message ---------
From: Judith L-A <m("postoffice.csu.edu.au","jlukin01");" rel="noreferrer noreferrer" target="_blank" class="">>
Date: Wed, 26 Aug 2020, 8:00 am
Subject: Fwd: which hawk ?
To: Judith L-A <m("postoffice.csu.edu.au","jlukin01");" rel="noreferrer noreferrer" target="_blank" class="">>

Thanks, guys. As you see, the various measurements fall between the 2 species, & I remain uncertain. The bird is in the fridge so I can still photograph it, & will add close-ups of the head, foot & toes, beak, & tail-tip.

Judith

---------- Forwarded message ---------
From: Judithla <m("gmail.com","jlukin01");" rel="noreferrer noreferrer noreferrer noreferrer noreferrer noreferrer" target="_blank" class="">>
Date: Mon, 24 Aug 2020, 3:28 pm
Subject: which hawk ?
To: <m("birding-aus.org","birding-aus");" rel="noreferrer noreferrer noreferrer noreferrer noreferrer noreferrer" target="_blank" class="">>

Greetings, all.

Here are measurements for an Accipiter found dead yesterday on the back landing here, beneath a hard-sheltered water bowl frequented by local passerines. These measurements I’ve compared with the following refs (& their diagrams), reaching an uncertain conclusion—
Menkhorst et al, 2017
Simpson & Day, 2004
Debus, 1998
Morcombe, 2000

*
The bird’s neck is broken. In the hand it feels broad-shouldered & “heavy”. Puzzlingly the beak & cere are all-black, with just the slightest whitish thread separating them.

Ventrally, chest-down the bird is finely barred rufous/white. There is a chestnut breast-band > slight dorsal half-collar. Dorsally the bird is brownish grey, & the head slate-grey. Brow-ridges are distinct. Tail is barred with a ventral bluish cast.

Measures are in CENTIMETRES, taken with a retracting metal household tape:

LENGTH  bill>tail-tip 37
WEIGHT  257g

WINGspan 56 ventrally (incl. chest)
  Single wingspread 30 dorsally (longest flight-feather > shoulder joint)

TAIL  appears notched —
  17.5 dorsally (from feather-base), 17 ventrally (from below cloaca)

BILL  1.5 (+cere=2)
Middle TOE  4.4 (incl. claw): appears longer by one-third than the neighbouring two. (Cannot be well-measured due to rigor, & damage.)
*

Two choices... What do you think?

Judith
SEQ 500m

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