The warbler on fruit. This is the Tropical Parula and they are closely related to our North American Parula. Breeding in South America. Note the more defined mask from the Northern and the darker head overall. Also the males never have the dark chest mark of the Northern. They do have the yellow crescent on the back. Barely seen here.

The same warbler on fruit. Susu's shot at the same time but this does show the yellow back marking.