Different Type of birdnest found near BH

Noticed 2 different bird nest in the under floor of my BH. Will this bring harm to the BH?

Visited BH last Saturday (6 June 2009), found 4 baby bird bodies and a small peice of bird nest (new brid nest) on the floor. Suspect BH temperature too high and low humidity. Started to using the data logger to check the BH condition, hope able to improve the condiction.

5 new bird shit spots - 23 May 2009

Conducted check on 23 May 2009, found 5 new bird shit spot and a new bird nest mark. Attached are the pictures take to share about the new bird shit spot and bird nest mark.

FC BH Start Operation

FC BH start operation on 3rd April 2009. It is converted from an old BH and with 6 birdnests.

My 1st visit on 9th May 2009, found 4 new birdnest spots. Also conducted temperature measurement and found the inner temperature vary from 29.6 - 31.2 for 3 days. Still waiting for the humidity tool to take measurement then only decide how to improve the BH condition.