Tony, to add a little to Cal's post. The all brown Ibis is actually the Glossy Ibis, not a White Ibis juvenile. The birds that are partially brown/white are the juveniles and they will generally lose the brown plumage and be totally white. And yes, if you are in Florida you will see the Ibis, both Glossy AND White.
Jim and DW 50 years Brenda
2017 40rssa, also a 2015 Salem (for Alaska)
2019 F450, ruby red
Harley Road King & sidecar