the animals relate to those in Jan's early paradise landscapes, particularly the Louvre Earth painted for Borromeo in 1608. It does not relate at all to the later paradise paintings. If this is by Jan, it must date to around 1608. Ir cannot possibly be by Jan the Younger (why would he have been using things from a decade earlier by his dad?) so I would think it's by an artist working around 1608 who has access to Jan's drawings or his Louvre (then Milan) painting. The arrangement of the animals is not like Jan and more like Frans II Pourbus; cf. painting in Pitti.
Copy sold Versailles, June 2, 1965 #152 (panel, 38 x 50.5) as attributed to Jan the Elder.
If this was the painting in la Granja in 1746, it was described as "Un país original en tabla de Abel Brueghel, el Paraiso Terrenal entregando Eva el pomo vedado a Adán de un terco y unos dedos de alto y media vara y cuatro de ancho.”