Sounds good Tim. Good luck to you! It's interesting that you notice the Blues and TRES nesting peacfully side by side. WOW. My friend who lives nearby has a lot of nest boxes on her property, and those silly TRES give the Blues an absolute fit every single year. They want all of the boxes for themselves and repeatedly chase the Blues away. My poor friend really frets about it.~~Angie

Yeah Angie it really depends on the aggressiveness of the birds. Last year the blues and TRES would fight here and there. The blues would land on the TRES's box and they would come after them but the blues refused to budge. Even after multiple dives the blues just wouldn't budge! They used it as a perch mainly.

But when the swallows landed on the blues box....look out! I recall the Male and Female each pinning the swallows to the ground a time or two. The male would frequently chaise them if they got anywhere close.

This year they perch on each other's boxes but usually split up when together. If the swarm of the swallows comes in the blues leave. But the swallow pair next to the blues perches on their box and if they see another swallow land on the blues box they chaise them down and flutter.

Same with the blues! Another Male bluebird (His call sounded like a fledgling from last year, maybe it is? Can anyone answer this) showed up today and the primary male chaised the other male high in the sky and ran it off.

These two species are so alike aren't they?! But why is there a swarm of swallows at my boxes and only 3 bluebirds? They face the exact same problems but yet the poor bluebirds are always out-numbered!

Mr. Blue was perching on, entering, and singing on the box. He'd then perch nearby and when the female landed on the box he was wing waving like crazy! But she landed on the front and landed on the top frequently. I hope they start building soon! Just not laying! Worried about cooler temps. 47 tomorrow and then 50's and 60's the rest of the week.