Raising Book Resources
Raising Hope for the 2020 Migration- Raise the Migration Results
Raise The Migration is an annual North American challenge to raise monarch butterflies to release for fall’s annual monarch migration. The time has come to share your 2020 experience and raise it forward…
The raising season is coming to an end, so we’d love to hear how many butterflies you released for fall’s annual 2020 monarch migration…and more importantly, what lessons you’ve learned through this amazing raising experience?
If you’ve still got some raising to do, raise on! But please post in the comment box at the bottom of this page after you’ve released your last butterfly.
Every year, I start Raise The Migration in early August, but monarchs raised at that time aren’t actually migration generation butterflies…they’re actually the parents to that amazing generation of travelers.
There’s no way to tell whether butterflies will mate or migrate, but one telltale sign of a migration generation butterfly is its size, which is dependent on how much the caterpillar eats. The first super-sized caterpillars start to form chrysalides around the first week of September in our northern region…
In the garden, you can tell non-migratory butterflies by their worn out wings. Non-migratory males are also more aggressive, chasing off potential competition while seeking out female companionship…migratory monarchs are in sexual diapause and only interested in stocking up on nectar for the long journey ahead.
So how did our Raise The Migration Monarchs fare this season and what lessons did we learn raising forward?
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If you’re interested in a step-by-step guide digital guide with free updates (before each monarch season begins in spring) please check out the monarch raising guide by clicking this butterfly photo:
For anyone who purchases the guide (or any other item) from Monarch Butterfly Life, you will be invited to our closed facebook group where you can discuss raising monarchs with other raisers and post your photos.
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Here are Raise the Migration results from the past seven seasons:
2019- 81% survival rate
2018- 93% survival rate
2017- 100% survival rate
2016- 96% survial rate
2015- 96% survival rate
2014- 90% survival rate
2013- 100% survival rate
As you can see from the results, this raising system is consistently producing healthy monarchs to help support the struggling monarch population.
Raise The Migration 2020 Results
I am counting our 2020 migration generation as all butterflies that eclosed September 1st and after.
Caterpillar Escapes
Since using food container hatcheries for eggs and baby caterpillars, this has helped us to easily keep track of the wee cats until they can be placed in the larger mesh cages. We have not lost a caterpillar for years...
Unexplained Caterpillar Deaths
None to report in 2020
Caterpillar Diseases and Parasites?
There were no caterpillar disease issues to report in 2020. Check out a pre and post molt of one caterpillar graduating from instar 3 to instar 4:
Accidental Deaths?
There have been two accidental deaths this year...seems fitting for 2020. 🙃
1. This was an odd fluke that happened in an egg hatchery. There was one container with two eggs that looked like they might have fungus issues from the leaves I found them on.
After monitoring, I thought one of the eggs had succumbed to a rust-like fungus that was growing around it. Little did I know, the caterpillar had hatched and crawled under the paper towel that lined the hatchery....there was even a fresh milkweed leaf under the fungusy leaf piece.
This has never happened before so I was shocked to find the dead baby cat as I cleared out the hatchery.
2. On a cold morning in the 3-season porch (low was 40° F), I picked up the floral tube/racks (with milkweed and caterpillars) and walked it into the kitchen without using the boot tray. Two of the cold, lethargic caterpillars fell to the floor. I rescued one...and stepped on the other. 😔
Chrysalis Problems
Chrysalis formation was perfect this season. I conducted 6 removing/rehanging experiments this year: 3 chrysalides hung up with pins, 2 hung up on a microfiber cloth, and 1 taped to the floor:
All 6 butterflies eclosed with no issues and the butterflies were released to join the 2020 monarch migration. The last male emerged Sunday October 11th, and was released on Monday October 12th:
Butterfly Eclosures
All butterflies emerged from their monarch chrysalises without issue.
Final Results
2 accidental deaths
0 disease or parasite issues
0 unexplained death
4 healthy males
5 healthy females
82% survival rate
Lessons Learned?
Of the two caterpillar accidents that occurred this season, one was a fluke that will likely never happen again.
However, the 'stepping' accident could have been easily avoided if I would have just followed my own advice for caterpillar safety. If moving caterpillars outside of the cage, place them on a boot tray so they will never fall on the floor.
I also learned that keeping chrysalides in the 3 season porch at night (during the fall) is a bad idea for our northern region. Cool night time temps slowed down metamorphosis by at least a week, meaning the excellent window I had to release butterflies in warm weather, quickly shrunk to just a few days.
The chrysalises get plenty of exposure to natural lighting and temperatures during the day through open windows. If these monarchs would have been left to fend for themselves outside, their wintry fate would have been sealed...🥶
Also, my preferred way of rehanging chrysalides is pinning the silk to the top of the cage. Really though, all 3 methods work well, so do what you're most comfortable with when you need to rehang a chrysalis.
August 2020 Migration Memory
And now, here’s the part I’m most excited about…hearing about all the valuable lessons you learned raising monarchs over the past few weeks!
Share Your Results?!
Please share your results below by letting us know how many monarchs you released to help boost the struggling monarch population…remember to include your location.
More importantly, please share the most valuable lesson(s) you learned about raising monarch butterflies, that you believe can help others raising forward.
Thank you for helping to Raise the Migration in 2020
348 comments
We raised fewer this year than last (only about 45 in central Iowa) but lost only 1 to tachid fly. Each one looked very healthy and good size; I was a little worried towards the end of season bc it turned cold quickly but thankfully a warm up allowed the last to fly. My biggest joy was when a close friend and her husband decided to start raising Monarchs and they did AMAZNG! They are already planning for next year!!
I live in Green Bay, Wisconsin. Though I have been ‘casually’ raising monarchs for many years, I count this as my first deep dive into trying to do everything I possibly could to do it right. My year was very successful. I raised 169, all but 2 were from eggs. Approx. 55 were in the monarch generation. The single most important thing I learned was how much planting milkweed, in garden plots and in pots, helped with my success. My mixture of common, swamp milkweed, and butterfly friendly flowers was a big draw not only to monarchs but bees and hummingbirds as well. And when the Mexican sunflowers began to bloom- it was monarch watchers’ nirvana. Having a plentiful supply of fresh milkweed was a huge help with raising. No more drives out to the country searching! AND-I feel better having added milkweed of my own rather than taking some from the wild, where monarchs need it too.
The two other big changes to my raising this year was:
1.I beached all the eggs when I brought them in. 167 of the 169 I raised eclosed in perfect condition and I think this helped.
2. I built an outside enclosure where I could raise my cats outside, protected from bad weather and natural enemies, but still getting the cues and ‘natural toughness’ that I think outside living brings them.
I want to stress something I have heard others say: When throwing out old, eaten milkweed, check it over an extra time and even then-keep it in a container for a while. I had three cats show up in discarded milkweeds after I was SURE I had checked it well.
My migration count, ones that eclosed after 9/1: 26 total, 15 female and 11 males. My date of my last release is 10/6/20.
I had a bad year, only a 60% success rate. I released 67 Monarchs (39 female, 28 male). I had 27 losses, most made it too chrysalis, but they turned dark and did not eclose. Had to euthanize two: one had crumpled wings, the other could not fly even after 3 days. I am not sure why I lost so many this year and need to think on what I should change. All my cages are directly outside, they are under tables to protect them from rain.
From Lancaster County Pennsylvania. I was able to release 156 monarchs this year 😊
This was my third year. I bring them inside to raise in egg stage as much as possible. This year I used small mason jars with wet flower foam and a wire flower separator with press and seal over the top and put the outer ring on. This was much easier to keep up with for me and the milkweed cuttings stayed fresher longer. I also cut out cardboard and covered in leftover contact paper. It gave the cages a more stable condition, especially with the short mason jars with milkweed and caterpillars. Didn’t loose any this way! I did have 2 cats that did not go into chrysalis and 3 black chrysalis to freeze.
I gave some milkweed plants to my neighbors and they started to raise some also. I hope to raise more next year.
Thanks to all who do this too and to you Tony for your knowledge and this platform!
Lynn