We’ve had three years in a row, including this season 2021, of later nestings started by the birds due to colder temperatures and rains. This seems to be a trend. Usually the first week of March has at least one bluebird nest started here in the Blue Ridge Highlands. I will be back out on the trail, probably tomorrow. Even the non-native invasive House Sparrow delayed nesting, which is surprising. The photos here will show nest and eggs from the Carolina Chickadee, Eastern Bluebird, and the invasive (and not protected) House Sparrow nest (nest and bird was removed). Tree Swallows are here. I will find out tomorrow if any nests have started and any eggs laid. House Wrens are looking now. It is my hope they will behave and not cause any havoc to any other nesting native birds on the trail.

Here we go Season 2021. Better late then never.

Carolina Chickadee Nest and Eggs – April 16, 2021
Eastern Bluebird Nest and SIX Eggs! – April 16, 2021
Invasive Species House Sparrow nest. Nest removed.


This is the Ron Kingston Stovepipe guard.

This is the Ron Kingston Stovepipe guard.

This nestbox was recently treated for ants!

This nestbox was recently treated for ants!

On the cusp of this Leap Year month, the nesting season is soon among us once again, and we must be sure our nesting boxes are protected so our beautiful native cavity-nesting birds can successfully fledge their young without sabotage and interruption.   It is up to us as humans — when installing manmade bird housing, that is — to add this protection.   We cannot do this in natural habitat in natural cavities much higher into the trees, but as stewards helping the native cavity-nesting birds, we can help by providing safe locations  for them to bring their young into the world when we install and lure the birds to use our manmade bird housing.  Predators from the ground are and can be, depending on your location:  Snakes, Raccoons, Cats, Opossum, Rats, Mice, and Squirrels.  Have I missed any?  (Will not stop ants.)  Mr. Ron Kingston and I keep in contact often.  Mr. Kingston, being the designer of this guard, has created an inexpensive-to-make but highly effective wobbling stovepipe guard to easily install under nesting boxes.  This design has been tested over and over on bluebird trails for many years.  He recently sent me this colorful PDF online document with more info with some awesome photo graphics on making this guard, including some nice info about Ron himself!  Thank you!   I have never seen it before. Here it is and linked from the Purple Martin Field Day (which occurs in June each day in Louisa County, Virginia):    Click here:   From the Purple Martin Field Day website

Yo, mama! She is guarding her egg clutch. The eggs can be counted on another day. If she sits right on the egg clutch when you open the box for monitiring, leave her be and quietly close the box and secure it. The eggs can be counted on another day! She is the boss and must be left to attend to her Mom duties. Please use predator guards so that Mrs. Blue will get attacked by snakes or climbing mammals like raccoons and cats. (Photo is by me in 2013, at a top-opening nestbox).

Let me know if you have questions either by posting here on this blog post or contacting me privately through the CONTACT ME page.  I will be duplicating this document on my “Deterring Predators and Pests” page also.  I am also linking the plan below how to make it in a PDF file, viewable and printable online below.  

Find the plans here (if the links are not live, just cut and paste the URL in your browser separately):  

 1.  From the Nestbox Builder website:  

 2.  From the Virginia Bluebird society website:  

3.  From Cornell’s NestWatch page on predators (includes info on the wonderful Noel guard): 

Photo by Richard Hess. What's not to love? A successful fledging from a nestbox is goal #1. PLEASE USE PREDATOR GUARDS.

Photo by Richard Hess. What’s not to love? A successful fledging from a nestbox is goal #1. PLEASE USE PREDATOR GUARDS.

Suggestion: I install as high off the ground as possible so I can still reach the tops of boxes to monitor fast and efficiently without too much fuss during nestings so the birds can get back to business away from my human presence to tend to their nest and young.  I use an auto visor mirror to look down onto the nests to count eggs and young and to check for any possible problems with the young so I can troubleshoot how to help, just in case.  I install the stovepipe guards under my nestboxes fairly high from the ground–where the tops of my boxes are at about six (6) feet above ground.  Boxes installed too low, such as 4 feet (even 5 feet is low if you are installing a box on an incline terrain or hill), are too easy for snakes, raccoons, and cats, to get past the guard.  Feral cats can jump 6 feet!  (NOTE:  I prefer all my boxes to be off of flat terrain as much as possible.)

Here is a YouTube Video I made regarding one of my first boxes on my trail and using this guard:  

Ground Climbing Predator Baffle-Kingston with Illustration





WHBBT-#5-CACH - May 24-2014

Carolina Chickadee Nestlings

WHBBT-BBs Near Fledging

Eastern Bluebird Nestlings

WHBBT-#12-TRES5Nestlings-June 7-2014

Tree Swallow Nestlings

House Wren Nestlings

House Wren Nestlings

Woolwine House Bluebird Trail Final Results for 2014: 

All 36 Nesting Boxes Occupied (Written Summary Essay Forthcoming) … more details forthcoming on challenges, successes, and disappointments … what was different this year from the past years … etc.


Eastern Bluebirds:  38 Nest Attempts; 221 Eggs Laid; 161 Eggs Hatched; 148 Bluebirds Fledged

Carolina Chickadees:  4 Nest Attempts, 19 Eggs Laid, 16 Eggs Hatched, 16 Chickadees Fledged

Tree Swallows:  4 Nest Attempts; 18 Eggs Laid, 13 Eggs Hatched, 12 Tree Swallows Fledged

House Wrens:  8 Nest Attempts; 41 Eggs Laid, 22 Eggs Hatched, 22 House Wrens Fledged


House Wren Predation:  6

House Sparrow Predation:  2 (broken eggs only)

Snake Predation:  1 (6” wide wobbling baffle/unprongedNoel Guard)

Raccoon Predation:  0

Human Vandalism Predation: 0

Unknown Predation:  2

Dead Adults:  0

Missing and/or Dead Young Combined:  11

Missing and/or Destroyed Eggs Combined:  49

Unhatched Eggs Found in Nest:  31



I’ve finalized and 3-times checked my statistics for fledging numbers for the permanent records. I’m going to write an essay and a “summary” in near future with more details; in the meantime, here are the final numbers of the Woolwine House Bluebird Trail for Year 2013. 34 monitored nestboxes. Only 1 box was not used. 5 boxes had partial nests and no eggs laid. 1 box I could not monitor due to an unforeseen circumstance. You will note a difference of # of eggs laid to # of birds fledged. Bottom line: The birds had a tough year with issues to deal with–some on their own and some with my help. Some won over the issues; some did not. My last bluebirds fledged late, on August 29, 2013.  NOTE:  A nest attempt means at least one egg is laid.  Questions?  Leave your notes here on this post and I’ll answer!

Reminder, too….lots of interesting discussions going on through the Facebook page!  If you are on Facebook, join us.  Keyword on Facebook Search:  Woolwine House Bluebird Trail or go to this main page and click on LIKE.



Eggs Laid: 192
Eggs Hatched: 146
Young Fledged: 138


Eggs Laid: 19
Eggs Hatched: 8
Young Fledged: 8

TREE SWALLOWS: 1 Nest Attempt

Eggs Laid: 5
Eggs Hatched: 3
Young Fledged: 3

HOUSE WRENS: 2 Nest Attempts

Eggs Laid: 11
Eggs Hatched: 6
Young Fledged: 6


Eggs Laid: 9
Eggs Hatched: 0 (removed nest/eggs)
Young Fledged: 0


Snake: 3 (all at boxes with no predator guards–I plan on changing this on these private properties for 2014)
Cat: 1 (at a box with no predator guard)
House Wren: 4
One adult death is unknown predator (My studies indicate an attack outside of the nestbox)


Earwigs: 2
Ants: 3
Wasps: 4
Spiders: 3
Unknown Winged Insect: 1
Blowfly Larvae: 10 (some WITH and without hardware cloth risers–more on this in detail soon)


` Thorny overgrowth up a pole (fastest growth I’ve seen yet!)
` Hypothermia to nestlings (wet nest–OLD nestbox on private property–nestbox should be replaced)
` Fallen stovepipe baffle (and repaired using galvanized wires–will replace before February 2014)
` Messy bluebird couple not cleaning nest daily (unusual but it can happen)
` White egg clutch (this is always a pleasure!)
` Bear knocking nestbox setup flat to ground (immediately after fledging – phew!}
` Roof needing repair (thankfully, the repair was before birds started nesting)
` Utility pole nearby with fresh creosote application. This is a long story.
` House Wren attacks on eggs and nestlings (worse year ever on this problem)
` Dead nestlings (not due to weather but other issues)
` Broken eggs (by House Wrens)
` Missing Eggs (this is the time I wish I had a live cam in every nestbox)
` 2 Dead Adults, both female (from a cat and one unknown attacker which was NOT House Sparrows)
` Several Carolina Chickadee vs. Eastern Bluebird competition (ongoing for several years)



I found this enlightening….bluebirds will hold their own and protect their territory. The bluebird nest was started, so they were first. Upon returning, it was discovered this chickadee appeared “interested” in this box. See what happens. Who says bluebirds are ALWAYS kind and gentle creatures? Well, OK, usually they are. Enjoy seeing what competitors do to keep prime real estate–our manmade nesting boxes, of course! Humorous and educational material here. Good job on the video making, I say.