Discovering a Monarch predator in the garden

August 16, 2015  •  10 Comments

On Friday morning, I was checking the marsh milkweed with my binoculars and finally saw a large Monarch caterpillar!  I found 11 in the patch by the pond, both large and small.  Elation!!

The 12th was another large one, and it was crawling off to find a place to pupate in the garden.  I left to have lunch with my friend, Lynne, so happy to finally have seen some caterpillars.

On my return, I went back outside again to photograph for awhile.  The butterflies were very active and I confirmed that there were four adults.

The males were really exhibiting some territorial behavior.  "My patch!" They were constantly upending each other. 

Then, something unexpected happened.  A bird was shaking one of the marsh milkweed plants.  It was a male Northern Cardinal.  He did it again, which dislodged a couple of the smallest caterpillars from the undersides of the leaves.  The bird quickly scooped them up and devoured them.  Despair!!

I have read that adult butterflies are lost to birds in the wintering grounds, but apparently, not much is known about what birds might eat the larvae.  My friend, Chris, told me that very evening that she had also seen a Cardinal take a large Monarch caterpillar.  Anyone else?  Please comment.  

 

http://www.monarchwatch.org/biology/pred1.htm

 

Today, SIX adult butterflies were here.  

At least one female was laying eggs.  She was very quick and this was the best photo I managed to get.

The Blue Sage began to open today and a Silver-spotted Skipper found it right away.

The young hummingbirds have been very active, too.  It's good to have some sunny summer days.

 

 


Comments

Scout(non-registered)
I knew and have seen for years that Cardinals would eat my Gulf Fritillaries caterpillars but didn’t think they would hit my Monarchs due to the milkweed toxins! Well, yesterday I saw a Cardinal pick off a newly spun Monarch chrysalis and eat it- couldn’t believe it. Was bummed for the Monarch but I also know the Cardinal has to eat too.
Alexia(non-registered)
I just saw a cardinal scavenging through my milkweed tonight! Bummer for the monarchs but I suppose I am doing this for the health of all of the ecosystem around me, not just the monarchs. It was kind of neat to know that I'm contributing to a healthy, natural food source for the birds in my neighborhood as well.
Paul j(non-registered)
After years of suspicion, I've witnessed in real time, a Cardinal eating and sharing with another family member, a large Monarch caterpillar. The birds actively forage through the entire stands of Swamp Milkweed. Virtually no insect survives to adulthood. My intervention of the smallest cats, to be raised in a protective tank, are its only chance to further the species. I'm reminded of something I once read, that caterpillars exist mainly as a food source. Se la vie.
Zipwoman(non-registered)
YES! In the last few days cardinals have taken all the monarch caterpillars in my pollinator beds!
Nancy Cross(non-registered)
Your pics are wonderful! I love your documentation. I have a wildlife garden which is small but brimming with flora and fauna. I have seen cardinal with a large Monarch caterpillar in her beak. It was at that time I decided to take the caterpillars and raise them in a mesh tent outdoors. It’s been really successful! I thank you for you beautiful pics and documentation.
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