Heat index

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jpp77
Posts: 130
Joined: Mon Apr 17, 2017 9:21 pm
Location: Lawrence, KS
Martin Colony History: 2015 - 1 pair, not successful (Sparrows)
2016 - 1 pair, 4 young
2017 - 5 pair, 23 young
2018 - 8 pair, 40 young, two deaths most likely due to heat.

Heat index

Postby jpp77 » Thu Jun 14, 2018 8:47 am

Heat indices near 100 degrees the next 3-4 days here in Kansas. Have a lot of babies anywhere from 3-10 days old. Hoping my Bo 11+ gourd within a gourd and vent caps do the trick. Ourlter shell white gourd with inner shell black gourd and an inch of space between the two for insulation/air flow. Fingers crossed.

-=DKC=-
Posts: 269
Joined: Thu Jun 08, 2017 2:26 pm
Location: Corpus Christi, TX
Martin Colony History: ................

2018: 11 pairs - 43 fledged
2017: 4 pairs - 17 fledged

Re: Heat index

Postby -=DKC=- » Thu Jun 14, 2018 1:03 pm

Hi jpp77. I have the same gourds with the added vent caps and I love them. I'm in South Texas where we've had 100+ heat indexes for at least a month now. I think the fact that we have almost constant 20 mph sea breeze helps ventilate the gourds but my birds have been doing well, although a bit hot mid-day. A still, hot day would probably be harder on them.

I'm confident that the dead air space between the inner and outer gourds, along with the vent caps is much better in heat than single walled gourds.

This year I added 3/4" 90 degree elbow vents to the cleanout caps. I used rubber o-rings to seal them to keep rain out. I turn the vents into the prevailing wind while keeping them pointed downward just enough to keep out water. I haven't measured but I'm hoping it helps.

Last year, when the actual temps were hitting 100 degrees, I added Coroplast boards above the gourds with babies which I'm sure helped. On the hottest days I also added put ice packs (inserted into socks to prevent burning babies) inside the gourds twice a day. All babies fledged.

If my actual temps approach the high 90s while I still have nestlings I'll add the shade again this year and probably ice packs as well.
"If at first you don't succeed, keep on suckin' till you do succeed." - Curly Howard

rrmartins
Posts: 1148
Joined: Tue Oct 19, 2010 8:04 am
Location: Round Rock, TX

Re: Heat index

Postby rrmartins » Thu Jun 14, 2018 1:13 pm

I got lucky, ours are fledgeing right now. Good luck!!
T14
2018
12 pair
53 fledged

-=DKC=-
Posts: 269
Joined: Thu Jun 08, 2017 2:26 pm
Location: Corpus Christi, TX
Martin Colony History: ................

2018: 11 pairs - 43 fledged
2017: 4 pairs - 17 fledged

Re: Heat index

Postby -=DKC=- » Thu Jun 14, 2018 1:15 pm

rrmartins wrote:
Thu Jun 14, 2018 1:13 pm
I got lucky, ours are fledgeing right now. Good luck!!
Half of my birds have fledged or are due to fledge this week. But I have a few gourds a month behind the others. I have all my supplies ready to go if it gets too hot.
"If at first you don't succeed, keep on suckin' till you do succeed." - Curly Howard

jpp77
Posts: 130
Joined: Mon Apr 17, 2017 9:21 pm
Location: Lawrence, KS
Martin Colony History: 2015 - 1 pair, not successful (Sparrows)
2016 - 1 pair, 4 young
2017 - 5 pair, 23 young
2018 - 8 pair, 40 young, two deaths most likely due to heat.

Re: Heat index

Postby jpp77 » Thu Jun 14, 2018 1:19 pm

We have pretty consonant 15-25mph winds, so I’m helping that will help out. I had the PVC elbow vents in my old regular gourds. Haven’t put any on my Bo11+ as I hadn’t thought about adding to the cap openings. Hoping I’m good. Haven’t decided a way to add shade to my Gemini as it’s my first year with the Gemini

-=DKC=-
Posts: 269
Joined: Thu Jun 08, 2017 2:26 pm
Location: Corpus Christi, TX
Martin Colony History: ................

2018: 11 pairs - 43 fledged
2017: 4 pairs - 17 fledged

Re: Heat index

Postby -=DKC=- » Thu Jun 14, 2018 1:36 pm

jpp77 wrote:
Thu Jun 14, 2018 1:19 pm
We have pretty consonant 15-25mph winds, so I’m helping that will help out. I had the PVC elbow vents in my old regular gourds. Haven’t put any on my Bo11+ as I hadn’t thought about adding to the cap openings. Hoping I’m good. Haven’t decided a way to add shade to my Gemini as it’s my first year with the Gemini
Good. I really think wind helps.

I didn't have elbow vents last year. With the Bo11s and caps it's probably not necessary. We just have so much sustained heat down here I thought I'd experiment this year.
"If at first you don't succeed, keep on suckin' till you do succeed." - Curly Howard

jpp77
Posts: 130
Joined: Mon Apr 17, 2017 9:21 pm
Location: Lawrence, KS
Martin Colony History: 2015 - 1 pair, not successful (Sparrows)
2016 - 1 pair, 4 young
2017 - 5 pair, 23 young
2018 - 8 pair, 40 young, two deaths most likely due to heat.

Re: Heat index

Postby jpp77 » Thu Jun 14, 2018 4:34 pm

Thanks for the information

Fuzzmeister
Posts: 60
Joined: Mon Sep 25, 2017 9:02 pm
Location: Saskatchewan Canada

Re: Heat index

Postby Fuzzmeister » Sun Jun 17, 2018 2:43 pm

I’m just wondering what the PVC elbow vents look like does any one have a picture of them? I need to install some vents in my house for next year.

flyin-lowe
Posts: 2312
Joined: Wed Mar 29, 2006 8:49 am
Location: Indiana/Henry Co.

Re: Heat index

Postby flyin-lowe » Sun Jun 17, 2018 3:24 pm

Does anyone know what temps need to stay at inside of a cavity for it to start to cause babies to die? We are also having record temps for this time of year. All the babies I have are a week old at the oldest. I would rather have the super high temps now then when they are old enough to jump out, unless of course they are more vulnerable at this young age.
2018- 15 pair last count 49 fledged
2017 3 SY pair nested, 12 eggs total, fledged 10. 4 additional SY's stayed all summer but never paired/nested.
2016 1 pair fledged 4
2015 Visitors
2014 Visitors
2013 Moved 6 miles away, 1 pair fledged 2.
2012 30 pair fledged 100.
2011 12 pair (11 that nested), 43 fledged.
2010 5 pair, 21 eggs, 16 hatched, 14 fledged.

taxidermy lady
Posts: 2984
Joined: Sun Mar 02, 2014 10:21 am
Location: IL/Ellis Grove
Martin Colony History: Started trying to attract purple martins in 2012! It's finally happened in 2017! 5 years!!! ASY male and SY female came May 1st, fledged 5 babies!

Re: Heat index

Postby taxidermy lady » Sun Jun 17, 2018 4:14 pm

Fuzzmeister wrote:
Sun Jun 17, 2018 2:43 pm
I’m just wondering what the PVC elbow vents look like does any one have a picture of them? I need to install some vents in my house for next year.
Here’s a picture I found!
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AF9AF350-9611-4D49-8291-CA35B777E071.jpeg
AF9AF350-9611-4D49-8291-CA35B777E071.jpeg (10.03 KiB) Viewed 348 times
Sharon from southern Illinois

-=DKC=-
Posts: 269
Joined: Thu Jun 08, 2017 2:26 pm
Location: Corpus Christi, TX
Martin Colony History: ................

2018: 11 pairs - 43 fledged
2017: 4 pairs - 17 fledged

Re: Heat index

Postby -=DKC=- » Sun Jun 17, 2018 6:25 pm

Fuzzmeister wrote:
Sun Jun 17, 2018 2:43 pm
I’m just wondering what the PVC elbow vents look like does any one have a picture of them? I need to install some vents in my house for next year.
The photo taxidermy lady posted looks ideal being as high on the gourd as possible. Since I have the S&K gourd with the added cooling caps, I opted to try vents on my cleanout caps so I wouldn't have to modify the gourds themselves. I'll try to remember to take a photo at my next nest check.
flyin-lowe wrote:
Sun Jun 17, 2018 3:24 pm
Does anyone know what temps need to stay at inside of a cavity for it to start to cause babies to die? We are also having record temps for this time of year. All the babies I have are a week old at the oldest. I would rather have the super high temps now then when they are old enough to jump out, unless of course they are more vulnerable at this young age.
I would like to hear some feedback on this as well.

I know that when my babies are sprawled out flat in the nest with their mouths open, they are suffering in the heat. From reading here on the forums I think a lot of the danger comes not from heat but from dehydration if they're not being fed enough bugs. I have definitely noticed a difference since I installed the additional venting on my gourds. The babies are hot but they don't look quite as miserable as they did before the vents.
"If at first you don't succeed, keep on suckin' till you do succeed." - Curly Howard

I heart birds
Posts: 489
Joined: Fri Apr 14, 2017 11:15 am
Location: Corpus Christi Tx
Martin Colony History: Will always be a wanna be landlord, martins or not!
2016- Two lookers-No takers.
2017- 5 pair. 15 fledged.
2018-18 pair. 85 fledged.

Oso Bay Preserve Satellite Location (Trio Mini)
2018-ASY visitor pair.

Firm believer in SREH, enlarged compartments, bug control, predator guards, heat insulation and venting.

PMCA member

Re: Heat index

Postby I heart birds » Sun Jun 17, 2018 7:01 pm

Not sure what the heat temperatures inside a cavity is the fatal threshold. Its got to be very high, but I would suspect its a combination of dehydration, food and the heat is what finishes it if they dont jump to escape. The chicks do suffer, feeding slows and they wait it out...I try not to do nest checks at peak heat times because of the stress they are already under. Cross ventilation is key, Iv got 1 inch vents on the plastic gourd caps, vented neck and insulated the inside all of the caps with .5 inch foam insulation. I open the cap vents when temps are at 90+ and if the chicks are past 10 days old...younger chicks are more susceptible to cold so keep them plugged.

The house has the 2 inch round vents on the caps, and by judging the amount of down feathers and pin feather material on them there is a healthy ventilation going on.
Tom

2016-Wanna be LL. Two lookers. nada
2017-5 pairs. 15 Fledged
2018-18 pairs. 85 Fledged.

flyin-lowe
Posts: 2312
Joined: Wed Mar 29, 2006 8:49 am
Location: Indiana/Henry Co.

Re: Heat index

Postby flyin-lowe » Sun Jun 17, 2018 7:59 pm

Did a real quick nest check today and all seemed to be good. We had high 90's yesterday and today with index's near 100 or higher. Fortunately after tomorrow it's supposed to be back in the 80's and little more tolerable. So far my experience in Indiana has been that I am kind of in the sweet spot for temps. Every year I have ever had martins by they time they arrive in the spring temps are stabilized and under normal conditions we don't get extended high heat spells until the very end of July and into August, by then mine have usually fledged. I can't remember what year it was but at my old colony I had to deal with a couple jumper one season but that has been it. My T14 has a few cracks/splits in it so it is not super air tight and on my Troyer gourds I have drilled out the little vent holes but have never needed more then that. I have some S&K gourds with the vent caps but I have never had a pair choose them....
2018- 15 pair last count 49 fledged
2017 3 SY pair nested, 12 eggs total, fledged 10. 4 additional SY's stayed all summer but never paired/nested.
2016 1 pair fledged 4
2015 Visitors
2014 Visitors
2013 Moved 6 miles away, 1 pair fledged 2.
2012 30 pair fledged 100.
2011 12 pair (11 that nested), 43 fledged.
2010 5 pair, 21 eggs, 16 hatched, 14 fledged.

sssSMOKING
Posts: 74
Joined: Fri Feb 24, 2012 4:26 pm
Location: Verona / VA
Martin Colony History: 2012 > Several Lookers,
2013 > 4 nesting pairs, 15 fledged
2014 > 4 nesting pairs, 15 Fledged
2015 > 5 nesting pairs, 23 Fledged
2016 > 9 nesting pairs, 25 Fledged
2017 > 12 nesting pairs, 43 Fledged

Re: Heat index

Postby sssSMOKING » Sun Jun 17, 2018 9:04 pm

Fuzzmeister wrote:
Sun Jun 17, 2018 2:43 pm
I’m just wondering what the PVC elbow vents look like does any one have a picture of them? I need to install some vents in my house for next year.
Here some I made.
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IMG_1635.JPG (113.57 KiB) Viewed 315 times
2012 > Several Lookers
2013 - 4 pair, 14 fledged
2014 - 5 pair, 15 Fledged (House Wren Destroyed Eggs, 5th pair)

Fuzzmeister
Posts: 60
Joined: Mon Sep 25, 2017 9:02 pm
Location: Saskatchewan Canada

Re: Heat index

Postby Fuzzmeister » Sun Jun 17, 2018 10:30 pm

Hey there
Thanks every one for all the info and pictures I defaintly believe that there has to be some type of air flow control in these cavities here in Saskatchewan our weather can go from one extreme to the other cold to hot and vice versa thanks again.

jpp77
Posts: 130
Joined: Mon Apr 17, 2017 9:21 pm
Location: Lawrence, KS
Martin Colony History: 2015 - 1 pair, not successful (Sparrows)
2016 - 1 pair, 4 young
2017 - 5 pair, 23 young
2018 - 8 pair, 40 young, two deaths most likely due to heat.

Re: Heat index

Postby jpp77 » Mon Jun 18, 2018 11:22 am

I firmly believe the Bo11+ helps in the heat since it has an outer gourd and an inner gourd with a space for air flow in between, as well as the vent caps. Basically, there is no direct sunlight on the inner gourd, which I would think keeps the temps down just a little. One more day of the mid 90's heat with humidity and then we get a break for awhile.

I had the elbow PVC vents on my Bo 9's before I replaced them.

jpp77
Posts: 130
Joined: Mon Apr 17, 2017 9:21 pm
Location: Lawrence, KS
Martin Colony History: 2015 - 1 pair, not successful (Sparrows)
2016 - 1 pair, 4 young
2017 - 5 pair, 23 young
2018 - 8 pair, 40 young, two deaths most likely due to heat.

Re: Heat index

Postby jpp77 » Mon Jun 18, 2018 11:30 am

Bo 9 vs Bo 11+ (gourd within a gourd)
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