How is about Karadya in this time ?
Like parque provinciales Uruguai, it is not far from Iguazu.
In October Karadya and pp Urugai was excellent for birding.
I started in Salta via Cabra Corral, Humahuaca, Laguna Los Pozuelos, Calilegua, El Ray, Formosa, Pilcomayo, NP Grand Chaco, Murubuya, Cruce...