I put my sparrow spooker up this year after 2nd egg ( didn’t know until there were two) & female accepted right away. The male was more apprehensive at first, so I did just what Gin suggested. I tied up the 1st 2 rows after I noticed & then let down a row each day. He now sits on top of it while she is in the box. Just took him a little longer, but all is well now.
Nicole