The Culprit!
Posted: Wed May 18, 2005 1:04 pm
With assistance from the North American Bluebird Society (NABS) the reason why our Bluebirds abandoned their nest has been identified.
One day, while the Bluebirds were elsewhere, a Tree Swallow saw the unoccupied nest and promptly laid an egg in it as Tree Swallows are prone to do.
When the Bluebirds returned and saw the strange egg they were so upset that they left the nest permanently and flew off to build a new one.
The NABS representative advised us to relocate the nesting boX, clean it out and perhaps the Bluebirds would return thinking it was a new box.
Sure enough, a day or so later they returned and are visiting the 'new' box regularly but have not yet started to nest. They eat their food and then fly off to, presumably, their other nest where they may by now have fledglings.
It will be interesting to see in which nest they raise their second family.
Tree Swallows are themselves beautiful birds and we now have several flying around the yard looking for their old nesting site!
They are well-known for competing with Bluebirds for nesting boxes.
Next season we'll provide each type of bird with a box as, apparently, they co-exist quite happily unlike Bluebirds themselves who will not tolerate another Bluebird family within 100 yards or so.
Attached files
One day, while the Bluebirds were elsewhere, a Tree Swallow saw the unoccupied nest and promptly laid an egg in it as Tree Swallows are prone to do.
When the Bluebirds returned and saw the strange egg they were so upset that they left the nest permanently and flew off to build a new one.
The NABS representative advised us to relocate the nesting boX, clean it out and perhaps the Bluebirds would return thinking it was a new box.
Sure enough, a day or so later they returned and are visiting the 'new' box regularly but have not yet started to nest. They eat their food and then fly off to, presumably, their other nest where they may by now have fledglings.
It will be interesting to see in which nest they raise their second family.
Tree Swallows are themselves beautiful birds and we now have several flying around the yard looking for their old nesting site!
They are well-known for competing with Bluebirds for nesting boxes.
Next season we'll provide each type of bird with a box as, apparently, they co-exist quite happily unlike Bluebirds themselves who will not tolerate another Bluebird family within 100 yards or so.
Attached files