Antigua West Indies (2 Viewers)

[Ian Silvester]

Is 1 and 2 Yellow Crowned Night Heron

and 3 Black- Crowned night Heron

Thanks

 

[THE_FERN]

I think the extensively yellow bill means these are all black-crowned. Yellow-crowned can show some yellow but only at the base of the mandible—not along almost the whole length as here.

 

[Butty]

Like Fern said. + pic 3 shows no narrow pale edge to greater coverts ( = black-crowned night-heron).

 

[njlarsen]

Also note shape of bill. Lower edge of lower mandible straight, upper mandible bending down to meet the lower. On YCNH, you expect a chisel shape where these outer edges both bend to meet in the middle.
compare: File:Yellow-crowned Night Heron.jpg - BirdForum Opus
Niels