Gourd temperature study

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Robert
Posts: 67
Joined: Mon Aug 06, 2018 10:49 am
Location: Columbia , South Carolina

Hello everyone I was just wondering today does anyone know of any official or unofficial studies that may have been done regarding temperature difference between a natural gourd and a plastic gourd and what the results showed I use both types , thanks for your replies.
Robert , South Carolina
PMCA member
40 year PM landlord
2018 season
21 pairs 107 eggs 99 fledged
2019 season
23 pairs 122 eggs 105 fledged
2020 season
23 pairs 122 eggs 72 fledged
2021
Louise Chambers
Site Admin
Posts: 6208
Joined: Tue Nov 04, 2003 1:07 pm
Location: Corpus Christi, TX

There are a lot of variables to be considered - size/dimensions of gourd? exterior color of gourd? If a plastic/manufactured gourd, different gourds have different features, some include ventilation holes or other ventilation options. With plastic gourds and houses, whether or not the walls are opaque, totally blocking sunlight, or translucent, letting some sunlight pass through the walls, affect temperature too.

To really answer your question, those items should be included as factors.
Spiderman
Posts: 796
Joined: Thu Jan 31, 2008 9:19 am
Location: Gladewater, Texas

Here you go some light reading from Chuck's Purple Martin page.

Scroll down to thermal testing of Martin housing.

http://www.chuckspurplemartinpage.com/
2008 - 33 PAIR - FLEDGED 96 YOUNG
2009 - 51 PAIR - FLEDGED 166 YOUNG
2010 - 45 PAIR - FLEDGED 146 YOUNG
2011 - 33 PAIR - 128 HATCHED, 97 FLEDGED
2012 - 37 PAIR - 119 HATCHED, 101 FLEDGED
Robert
Posts: 67
Joined: Mon Aug 06, 2018 10:49 am
Location: Columbia , South Carolina

Thanks for the replies Louise and Spiderman your correct lots of different factors in determining inside temps , it was very interesting to read though the differences between PM house temps and gourds.
Robert , South Carolina
PMCA member
40 year PM landlord
2018 season
21 pairs 107 eggs 99 fledged
2019 season
23 pairs 122 eggs 105 fledged
2020 season
23 pairs 122 eggs 72 fledged
2021
Spiderman
Posts: 796
Joined: Thu Jan 31, 2008 9:19 am
Location: Gladewater, Texas

One other thing I might add.

I have Troyer Horizontal Gourds. I added two 3/4" ells to the back of the gourds. It offers flow thru ventilation that helps to reduce the humidity and it will eliminate "wet" nests. So while the temp. May not change but by a degree there are other reasons to add vents.
2008 - 33 PAIR - FLEDGED 96 YOUNG
2009 - 51 PAIR - FLEDGED 166 YOUNG
2010 - 45 PAIR - FLEDGED 146 YOUNG
2011 - 33 PAIR - 128 HATCHED, 97 FLEDGED
2012 - 37 PAIR - 119 HATCHED, 101 FLEDGED
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