Favorite Hobby : Strolling in the park and observe the plants

This is actually not new hobby, but mommy just notices recently that Richie likes to go strolling in the park while observing plants, tress, flowers, leaves.
Now, every morning around 8.30 am and afternoon around 6.30 pm, mommy always bring Richie to the garden down the blocks.
And Richie likes to observe the greeneries than other things such as birds, dogs, or cats.
He seems ignore them when mommy wants to show them to Richie..