Here is my idea for the first of the Druid adventures:
Rogue Bear (CR1)
A wild bear charges into the worker's camp and begins attacking workers. The PC's are present nearby and can respond if they wish.
Following this the commander of construction calls for the PC's to meet with him. He seeks to hire them to investigate where the bear came from. There are not enough men to spare in his garrison to do this on his own. He offers 1 week's pay to each (10 gp's) to find information about where the bear came from. It was noted that the bear arrived in the camp with injuries to its flanks.
Track the Bear (CR 1)
The bear's trail is easy to follow to a clearing about 1/2 mile away. DC 7 to track.
The clearing has tracks from goblins all around it. Several sharpened sticks with blood on the tips are also found. Searching the clearing will find:
DC5 - Tufts of bear fur
DC10 - Bloodied leather helmet
DC15 - Dagger with Wing emblem on tang (goblin dagger)
DC 20 - Small pouch containing 15gp, 17sp, crude map on piece of bark depicting main camp
DC10 to follow the goblin tracks deeper into the forest.
Goblin Advance Camp (CR 2)
Goblins of the Black Wing tribe are camped here. There is a small central fire with four small hide tents. A total of 12 goblins are here. They are armed with spears and slings. Several have daggers as well. Each wears hide armor, leather helmets and small wooden shields.
The encounter is only CR2 due to the relative ease of the PC's to achieve surprise. There are an additional 2 goblins injured in the tents from goading the bear. Their leader is a Warrior1. The last 4 goblins standing will flee in the face of a tough fight.
Searching the camp will reveal:
Arms for each defeated goblin
88gp, 125sp, 264cp
5 Bloodstones 50gp (1 per PC)
Map showing river bend camp
Deer hide with Black Wing clan symbols
Map of Fort and surrounding camp drawn on papyrus. DC 10 to see that it is drawn by different hand than other maps.
Report to Commander
The PC's have gained information about the bear's appearance. It would appear goblins drove it into the camp. The goblins have two maps in their possession, apparently drawn by two different people. One of these maps depicts the partially completed fort being built by the Mittendeiners. If they return to report at this point they should be awarded 150XP bonus each. In addition, the commander will give them a bonus of 50gp each.
