Terns ID - Singapore (2 Viewers)

[lowressgbirding]

I have a bunch of photos which I believe are a mix of little / white-winged / and hopefully whiskered terns. But I am not 100% sure how to distinguish them, especially the whiskered from the little terns, in non-breeding/juvenile plumage. (The white-wingeds are perhaps more distinguishable based on the "headphones" markings on the head, e.g. 5,7,8,9,14,15?)

Would greatly appreciate confirmation on which photos correspond to which tern respectively. I've numbered the photos so I hope that makes for easier referencing.

Many thanks.

 

[lowressgbirding]

Realised photo 14 is missing above, and have added it here.

 

[lou salomon]

apart from pic(s) 16 (and maybe 2) which are White-winged Tern, all birds look to be Whiskered Terns, most of them 1cy. no Little Terns here.

 

[Alexander Stöhr]

Hello,
as the new picture wasn't there when Lou responded, and for sake of completeness:

I agree with you, the new picture, nr. 14 shows a White Winged Tern. Although difficult to judge, the head phone pattern on the ear coverts together with the white nape and the rounded head gives this bird a White winged head to me.

 

[lowressgbirding]

Many thanks Lou and Alexander!