[CT Birds] Bluebird Behaviour: Other Nest Dangers

W RUPP rupp at snet.net
Tue Jul 2 08:13:58 EDT 2013

Other possibile dangers for nestlings include house sparrows and house wrens.  Several years ago we had a nestful of bluebirds killed by a male house sparrow just a day or two before fledging.
Dean Rupp, Killingworth

From: "teustis at killingworthlibrary.org" <teustis at killingworthlibrary.org>
To: Robley Evans <rjeva at conncoll.edu>; Bird List Serve <ctbirds at lists.ctbirding.org> 
Sent: Monday, July 1, 2013 3:40 PM
Subject: Re: [CT Birds] Bluebird Behaviour

Was there a rival male (or female) in the area at the time? That would definitely start a male bluebird singing. Bluebirds can have multiple nestings over the course of a season, so if he thought there was any threat to their territory, he might have been in defensive mode.
It is strange, because birds get very quiet during the nestling phase. We usually have no idea there are babies, until there's a very noisy fledge. So a rival - or some danger to the nest like a snake or chipmunk - is probably what set him off.
~ Tammy Eustis, Chester

-----Original Message-----
From: Robley Evans [mailto:rjeva at conncoll.edu]
Sent: Monday, July 1, 2013 09:24 AM
To: 'Bird List Serve'
Subject: [CT Birds] Bluebird Behaviour

Does anyone know why a male bluebird spends much of his time during thelast week of nestlings' time in the birdhouse, flying over his territorysinging? I had thought when I first observed this behavior that he wasluring them leave home. Probably not. Any answer? Robley Evans NorthStonington

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