The trees are (edited meshes) from the idol ruin in Castaway Stories. The branch with the birds is from the Sims 3 Season Tree bookshelf . The branch with the nest is from the Sims 3 Store Better Than Golden Eggs sculpture. Textures are from Sims 4.
*Note~ When Icy gets around to retexturing this for me it will be moved to our joint account because his textures will look way better than mine.