In this Thursday, May 2, 2013 photo, a pigeon roosts on an 

In this Thursday, May 2, 2013 photo, a pigeon roosts on an organ pipe at Notre Dame cathedral in Paris. The organ was refurbished for the cathedral’s 850th anniversary this year. (AP Photo/Christophe Ena)
Associated Press
In this Thursday, May 2, 2013 photo, a pigeon roosts on an organ pipe at Notre Dame cathedral in Paris. The organ was refurbished for the cathedral’s 850th anniversary this year. (AP Photo/Christophe Ena)
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