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Yellow-Crested or Sulplur-Crested Cockatoo ? (Singapore) (1 Viewer)

Definitely interested where this goes, because I has just assumed the ones I had seen in Sydney were Sulphur-Cresteds. I may need to make a change to my life list.
 
I hadn't realized there was another cockatoo that could be mistaken for a Sulphur. I'd known about the SC since before I was even birding and had never heard of the YC. Just need to revisit the photos and reconsider the species, based on the field marks discussed here.
 
Sasquatch Fingers said:
I hadn't realized there was another cockatoo that could be mistaken for a Sulphur.
Click to expand...

There isn't in Australia

Yellow-crested

This species is endemic to Timor-Leste and Indonesia, where it was formerly common throughout Nusa Tenggara (from Bali to Timor), on Sulawesi and its satellite islands, and the Masalembu Islands (in the Java Sea).

From Birdlife international

You have seen Sulphur Crested in Australia.

Andy
 
Checked in HBW; Yellow-crested is introduced in Singapore, but not Sulphur-crested (guessing I was getting muddled with other spp like Goffin's)
 
Nutcracker said:
Checked in HBW; Yellow-crested is introduced in Singapore, but not Sulphur-crested (guessing I was getting muddled with other spp like Goffin's)
Click to expand...

My understanding...
Goffin's/Tanimbar is a common introduced breeder;
Yellow-crested is an uncommon introduced breeder;
Sulfur-crested as far as I know isn't breeding and just escapees in the Sentosa and Mt Faber area
 
Thanks, my guess is Yellow-Crested (33cm)...it's size doesn't really match Sulphur-Crested (45-55cm) and this shot was taken at very east of Singapore @ Pasir Ris Mangrove Swamp ....far from viator mention locations @ Sentosa or Mt. Faber .
 
Sulphur-crested for me. No significant yellow cheek patch and white skin around eye (cf bluish in yellow-crested).
 
I'm not completely convinced it's Sulphur-crested. The yellow on the cheeks can be very faint on Yellow-crested, and the orbital skin very pale blue (looking at some images), and I think I can see very faint yellow on the cheeks and a bluish tinge to the orbital skin on this bird. One is huge compared to the other, so size in the field ought to be a good clue!
 
Larry Sweetland said:
I'm not completely convinced it's Sulphur-crested. The yellow on the cheeks can be very faint on Yellow-crested, and the orbital skin very pale blue (looking at some images), and I think I can see very faint yellow on the cheeks and a bluish tinge to the orbital skin on this bird. One is huge compared to the other, so size in the field ought to be a good clue!
Click to expand...

ScC can develop a slight yellow on the cheeks whilst YcC has a much brighter crest (closer to orange they say in some) generally. Racially, ScC can have a bluish hint to the eye ring, clear as mud really.

As Larry says, size would be the clincher but I'm still in the Sulphur camp.


Andy
 
Last edited:
I quote from Parrots of the World, Juniper and Parr.

Re Yellow-crested

'This is the only one of the three (confusion species) to show a strong yellow or orange-yellow suffusion on the ear coverts and this feature alone should be enough to separate it from the other confusion species'

It does go on to say that some races can be weakly marked, we need to measure it, however, this is an escaped cagebird so I guess strictly should not be on this board?


Andy
 
Last edited:
andyadcock said:
,..... however, this is an escaped cagebird so I guess strictly should not be on this board?


Andy
Click to expand...

...unless it's a Yellow-crested, in which case you could call it feral! ;)

here's a pic of what I assume is Yellow-crested (going on the blueness of the orbital ring), showing white cheeks: http://www.konicaminolta.com/kids/endangered_animals/library/sky/yc-cockatoo.html

there are several other pics of yellow-cheeked birds with whitish orbital skin, and pics of Yellow-cresteds with very faintly yellow cheeks. In a small feral population (like on Singapore) they could be even weirder I suppose.

I'm still not totally convinced it's Sulphur-crested.
 
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