Ground finch (male)

Thanks again Peter. Yes, they are certainly tricky!

Same here, Karen. I don't think this is Camarhynchus psittacula. Looks like a male Geospiza fortis (or maybe fuliginosa?) to me. - These guys are difficult! Darwin did not right away understand that they are different from Island to Island (he realized inter-island differences in Mockingbirds and Tortoises, though), - and they sometimes don't tell each other apart either: they sometimes interbreed!