% of needed open housing requirements

Welcome to the internet's gathering place for Purple Martin enthusiasts
Post Reply
Posts: 28
Joined: Wed Jul 08, 2020 9:43 am
Location: okeana ohio

Just curious about how many open compartments do you think is good this year, as to know when to add more housing for next year.

thanks jeff
Posts: 56
Joined: Sun Jan 12, 2020 10:47 pm
Location: Plymouth, IN
Martin Colony History: 2021 Texas deep freeze, first arrived 4/6.

2020 first arrived 3/27. 21 pair, 92 fledged, 9 non viable.

2019 first time with Martin's, first arrived 4/24 10 pair, 24 fledged, 15 eggs non-viable.

I thinks it's preference on how many you want and can manage. As long as you have open housing, and a safe environment to where they have successful high yield clutches, you'll find growth each year. We have a Troyer K-24, our first year we had 10 pair, last year (our second year), 21 pair. This year we decided to add another K-24, as of today, every Sunday we do nest checks, we have 36 pairs and a total of 152 eggs. The latest we have eggs laid is June 20-25th. We think future plans of 2 more racks depending on how time is for us.
Posts: 3158
Joined: Wed Mar 29, 2006 8:49 am
Location: Indiana/Henry Co.

It is uncommon to get 100% occupancy on martin housing. So some people offer 16 gourds and each year they have 10-14 pair each year. It is very likely if that person added another 16 gourds they could have 25-30 pair the next year. If you want to expand once you get over 50% capacity of your housing it is a good time to add new housing. Last year I had 52 cavities and had 42 pair. I went ahead and added 16 more gourds (68 total cavities this year) and my first nest check of the year 2 weeks ago I had 60 cavities with nests. I likely have a few more nests now, will be doing a nest check tomorrow.
2021 Currently 62 nest 138 babies plus 110 eggs (6-317-21) HOSP count-9
2020 42 nest, Fledged 164 HOSP count-8
2019- 31 Pair over 100 fledged
2018- 15 pair 49 fledged
2017 3 SY pair nested, 12 eggs total, fledged 10. 4 additional lone SY's
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 43 fledged.
2010 5 pair 14 fledged.
Posts: 28
Joined: Wed Jul 08, 2020 9:43 am
Location: okeana ohio

Thanks for the info to base my decision. I have a total of 34 cavities with 22 nests that either have eggs or chicks. Some cavities have green leaves but no eggs or chicks as of now.

Post Reply