Friendly Reminder

Family of Florida Sandhill Cranes at Barr Hammock near Gainesville

Yesterday I was digging through my t-shirt drawer, weeding out the ones I never wear anymore, and uncovered a sock that was tucked inside the neck of a shirt. I just about shouted for joy! It was my long lost sandhill crane sock that had disappeared sometime after a trip to Florida at Thanksgiving. I was really sad that I had lost it and finding it made me so happy that I was smiling and in a good mood for the rest of the day. It's a little hard to explain, but I have a strange emotional attachment to some of my socks and earrings. They each give me comfort in some way. The sandhill cranes were one of the things I missed most about moving away from Florida (besides family and friends, of course!) and these silly socks were a friendly reminder of the birds I had grown to love during our time living there.

Headline News: Beloved sock, found again!

Gainesville might be famous for the Gators, but it should also be known for the cranes. Sandhill cranes are a huge part of the natural history of Florida and of Gainesville. According to the All About Birds website run by the Cornell Lab of Ornithology, "the earliest Sandhill Crane fossil, estimated to be 2.5 million years old, was unearthed at the Macasphalt Shell Pit in Florida." The cranes that come to Florida spend their summers in the Great Lakes region and fly south roughly along the I-75 corridor, arriving in November and December. They are a separate subpopulation from the cranes that migrate and gather in the spring to refuel in famously huge numbers (500,000 plus) at the Platte River in Nebraska. (There is also a threatened sub-species called the Florida Sandhill Crane that lives in Florida year round and raises young there. They are somewhat smaller than the migratory cranes.)

USGS Map of Crane Migration. Note that the scientific name for the Sandhill Crane has recently changed from
Grus canadensis to Antigone canadensis

Sandhill cranes are beautiful and large birds (3-4 feet tall) with long legs, a huge wingspan, long bills and a striking red patch on the forehead. They live in families or pairs, but during migration and winter gather together in large flocks. They prefer marshes and fields where they can feed on seeds, roots, bugs and small critters. The marshes give them protection from predators. Over the years, Paynes Prairie Preserve State Park, just outside of Gainesville, with its wet prairie and wide open spaces, has been a preferred wintering ground. Their breeding ground is far to the north where they spend the summer. For the cranes that migrate to Florida, this means Ohio, Michigan, Wisconsin and up further into Canada. When the cold and snowy weather arrives in the fall, like all good snowbirds, they head down south. 

A Beautiful Bird

Red Splash

That big bill is good for probing the soil

The cranes arrive in bunches, usually flying in at night. I read that they can fly 170-450 miles per day, probably depending on a good tail wind and whether they find good resting and feeding spots along the way. More cranes keep arriving all month and the flocks grow bigger. After a few weeks it will be common to see large V's of cranes taking off together around mid-morning from their nighttime resting spots to the marshes and farm fields where they pick through the muck and animal feed.

Searching hard for food. Got to get every last bit!

Coming in for a landing

They stick around in sunny Florida, fattening up until February or March, then start the trip back north to breed. They usually lift off mid-morning, maybe because the thermals are better for flying. They circle overhead, waiting as the groups gather, and then they leave in waves, like squadrons of fighter planes moving out. As with arrival, leaving goes on for a few weeks.

Squadrons heading out

Heading north again

Both our homes in Gainesville were under the flyway and I'm not sure if I can count the number of times I was outside working in the yard or out running errands or walking and heard the unforgettable sound of cranes calling. I would stop whatever I was doing and just stand watching them as they flew overhead, calling and answering in their familiar trumpeting voices. I felt a thrill but also felt sadness as I said goodbye for the season, wishing them well on their journey. Until next fall, friends.

Sometimes endangered Whooping Cranes will join Sandhills, as this one did on the UF campus one year. The Whooping Crane is the tall all white bird in the center

In 2008-9 an exceptionally large number of cranes wintered at Paynes Prairie. People estimated that there were 8000 cranes in Gainesville that year. It was an amazing sight. You should see the mess left when a big flock of cranes has spent the winter. The ground was all turned up and every green sprout and seed and slug had been pull out in their furious search for nutritious food. It looked like it had been rototilled. But the plants grew back again, though the cranes really had changed the landscape that year. When the huge flocks headed back north that spring, the sound as they flew and honked overhead was like a roar from a stadium. I remember being so excited that I grabbed the phone and called my mom and dad in California so they could hear it, too, forgetting that there was a time difference. I'm pretty sure I woke them up, but it was for a good reason. Click here for to see a short video and hear just 2 cranes calling to each other. Multiply that sound by several thousand and you can get the idea.

Flying in

Feeding. See how they have turned the soil?

More landing

Over the last several years, fewer cranes have been wintering in Gainesville. Whether this is due to flooding from hurricanes, loss of habitat along the way, climate change, better food elsewhere, is not clear. It is also not clear if they will return to the area in large numbers again. I don't believe that the population is suffering, but they might just be relocating. This year I heard that more were reported at Okefenokee Swamp in Georgia. Thousands of cranes still make the trip down to points south and to Florida, and the non migratory population will stay as long as they can find good habitat. Overall, the success story of the sandhill crane is heartening. At one time there were fewer than 1000 left. But due to conservation efforts they have thrived. They still face threats from habitat loss, pollution, hunting and climate change, but their numbers are currently strong. My friends in Gainesville say that the cranes are gathering and heading north again and people around Kennesaw, north of Atlanta are seeing them now, too. Unfortunately here in Athens, we are far enough away from their flyways that we don't often get to experience the huge flocks flying overhead. I saw one lone crane flying over Athens last fall but never heard the rattling call that thrills my heart. For that experience I still need to head closer to I-75. Even better, maybe one day I can visit the Platte River in Nebraska in the spring. I can only imagine how wonderful it would be to hear the sound of 500,000 plus cranes calling. Meanwhile, my socks are mementos of the cranes I love. But I worry that they will wear out one day. Maybe I need to find something a bit more permanent to hold onto. Like a tattoo? Hmmm.

A Florida Sandhill Crane family I saw at Circle B Bar Reserve last spring

Monarch Madness

Monarch Butterfly enjoying Swamp Milkweed (Asclepias incarnata) earlier this summer

I've been away a lot this summer, but I am happy to report that our garden is doing just fine without me. Luckily, I put in a few days of weeding and thinning in June, or the whole place would be a mad jungle, overgrown and covered with towering goldenrod and swamp sunflowers. Instead, it is a lush and thriving riot of colors, but with some boundaries! And so when I returned this week from yet another trip out of town, I was tickled to discover about 20 monarch caterpillars happily munching on the big Swamp Milkweed (Asclepias incarnata) in the front yard. It is common to see Monarchs here all summer, but the population really picks up in September and October as the butterflies make their way, usually above the treetops, to Mexico for winter. I believe that the caterpillars I'm seeing were from eggs laid one or two weeks ago. It appears that there are two batches on the bush--the big fat ones that are just about ready to pupate, and the ones about half their size that will be grown in about a week. I saw a female laying eggs yesterday and I hope that the ravenous hordes leave a few branches for the last generation.

Monarch caterpillars, madly munching

This is important to me because I love Monarchs. They're really pretty, and who doesn't admire their amazing migration story? And they're in danger. Monarch populations have decreased by about 90 percent from numbers recorded over 20 years ago. The causes are many--habitat destruction, pesticides, herbicides, and loss of their food source--milkweed, to name a few. It's exciting and uplifting to participate in the Monarch life cycle. Our yard is certified as a Butterfly Habitat and is a stop on the Rosalynn Carter Butterfly Trail. Monarchs will only lay their eggs on plants in the Milkweed family. There are many varieties specific to regions of the country. We plant native nectar and host plants for many kinds of butterflies and refrain from using herbicides or pesticides in the garden. The result is a healthy habitat for all sorts of creatures--butterflies, bees, wasps, birds, moths, spiders, etc.

Milkweed Bugs eat Milkweed Seeds

Aphids infest the milkweed every year. They drink the sap. I don't mind them, but if they bother you, you can squirt them off with a hose or just brush off with a paint brush. Pesticides will harm other insects, such as butterflies.

Great big Green Lynx spider and lots of aphids

Japanese Lady Beetle (aka Ladybug) and aphids

Milkweed Beetle eats the leaves

But the garden is not without its perils for the butterflies. Last night I walked past the milkweed bush again and flushed a bird that was probably hunting for caterpillars and bugs on the stems. A moment later I spotted the female Monarch that earlier I had watched lay eggs. She was caught in the jaws of an enormous Green Lynx spider perched on top of the milkweed bush. The spider had caught the butterfly and was eating it. I felt a temporary twinge of sadness for the butterfly, but then cheered for the spider who needed food for herself. Her huge abdomen was swollen, probably with eggs, and she needed nourishment, too. The butterfly had passed on her genes through her eggs, so she had fulfilled her biological destiny and was now part of the food chain. Whether those eggs will grow to adults and also pass on genes is a crap shoot. But this is why butterflies lay so many eggs, and why it is important for there to be milkweed patches all over for them to lay their eggs on. This morning I found that the spider had caught one of the caterpillars and was busily sucking it dry. Birds and wasps catch and eat them, too. Aphids are very attracted to milkweed. They are sap suckers, and sometimes they will harm or kill the plants. But the aphids attract ladybugs and their larvae that snack on aphids like popcorn. Milkweed Bugs make their home in the plants and eat the seeds, and Milkweed Beetles eat leaves. The 20 hungry Monarch caterpillars will strip the leaves off the bush within another week or so and may eat themselves out of house and home. All these beings are competing for the resources on these plants.

Green Lynx spider with Monarch for dinner

Something killed this caterpillar, and now it is food for the ants. The green blobs are caterpillar poop, also called "frass"

Green Lynx Spider with Monarch caterpillar for breakfast

New Monarch egg, with shadow of a ladybug larvae on the back of the leaf

Big, fat Monarch caterpillars quickly defoliate a milkweed plant

Some people who grow butterfly gardens will collect the eggs and grow the caterpillars to adults inside protective enclosures to keep them safe. I totally understand their care and concern, but as I told someone yesterday, I am more of a "free range" butterfly gardener. It makes me uncomfortable to make these creatures my captives. I feel much better about providing an opportunity for them to grow and thrive out in the world, but as part of a greater ecosystem. That's another aspect of the tragic loss of the massive Monarch population. They are part of an interdependent web of life. We all feel their loss. I encourage everyone who has an interest in helping the Monarch to try to plant native milkweed in their garden or even in a container garden on a deck. Do your part to help keep this iconic insect from disappearing. Go out and garden on!

The caterpillar doesn't seem to mind the aphids

Update: a few days later I went out to see if the Green Lynx spider had caught any more caterpillars and found that it was missing! In its place was a caterpillar, casually chewing on the leaves of the hunter's lair. I thought the spider must have become a meal for a hungry wasp or bird, an ironic turn in the in the circle of life. But then I saw some movement in the Blue Mist Flower bush next to the milkweed. The spider had simply moved to richer hunting grounds. Maybe she got tired of eating bitter Monarchs, but in any case, the milkweed is now packed with caterpillars and other insects of all shapes and sizes, safer for now. The egg I pictured above hatched and its tiny contents now roam the branches alongside of the aphids. And I spotted the first of what I imagine are many chrysalids hanging from a low tree sprout, far away from the caterpillars and things that hunt them. And so it goes...

Caterpillar chewing on the spider's lair

Happy spider

New hatchling, not much bigger than an aphid

A fresh chrysalis, hopefully one of many

Goodbye Winter

Star Magnolia in Bloom

I'm pretty sure that Winter is finished here in Athens. Sure, there could still be some more cold snaps coming, but the temperatures here are balmy, in the 70's and 80's. In fact, it almost feels like Spring will whiz past without giving us a chance to savor the "just right" temperatures between frigid and roasting. We may be in for another record breaking scorcher summer and drought. I sure hope not, but signs are pointed that direction. Meanwhile, though, it's a lovely Spring, and the camellia bushes and ornamental magnolias are blooming like mad and the daffodils are standing tall and dreamy yellow in patches all over the city. The Cedar Waxwings can still be seen bopping through the treetops, but they have polished off most of the choice winter berries and I expect that they will be leaving soon, along with the masses of Grackles and Robins. By the way, in case you were wondering, the collective noun for a group of Grackles is "Plague". They certainly do swarm in, like a plague of locusts, and eat everything in the feeders and throw the leaf mulch all over, but I still like them. I enjoy their raspy sounds and iridescent blue/black feathers. And it is amazing to watch hundreds of them launch in unison from the trees when they decide it is time to move on to the next yard. The celebrity Baltimore Orioles and the Rufous Hummingbird that have stuck around our yard all winter are still sticking around. Lots of people have come by to look at them, including some Ornithology Classes from UGA! Friends asked us why we had crowds of people with binoculars in our yard. It makes me smile every morning to see the hummer perched at our kitchen window feeder, guzzling away. And, as they did in Gainesville, the Orioles chatter at me when I refill their grape jelly feeders. They also like to drink from the hummingbird feeders, so it is a challenge to keep them all full. It was exciting to see 3 Orioles last week for the Backyard Bird Count.

Cedar Waxwing feeding on Ligustrum berries

Plague of Grackles

3 Orioles at the Feeder!

Rufous Hummingbird takes a rain bath

When I see the Hummingbird in his usual spot in the bushes, where he can keep a watch over the whole yard, I wonder what is going on in his mind. He is so far away from where he should be. Does he know it? Does he care? Does he miss being with his own species? He looks kind of lonely, but hopeful. Always on the watch. Is he looking for other hummingbirds? Does he miss having other birds to hang out with? Do hummingbirds even do that? I imagine that he'll decide to fly home one of these days soon. But where exactly is home? For summer breeding season, that would somewhere in the upper Northwest and into Canada and Alaska. Migration season they would mostly be in the Mountain West, California and Mexico. And for winter, mostly Mexico. That's a long way from Georgia for a tiny bird, but Rufous Hummingbirds are tough. I was reading more about Rufous Hummingbirds and found that they live 4-5 years and are one of the hardier species that can withstand some cold winter temperatures. In the Q&A section of one website, someone asked if it was true that hummingbirds migrated on the backs of geese. I really laughed at that one. The answer is no. But I do wonder when the hummer will go back to be with "his people" or if he'll stick around for a while longer. The Ruby Throated Hummingbirds are ready to begin their migration back north again and when they arrive, he'll have lots of competition at the feeder, if he stays that long. I wish him luck on his trip back home, wherever that may be, even though I will miss seeing his little silhouette through the bushes. He needs to get back to breed. I will miss all the winter visitors, but the seasons change and nature calls on them to move on. Now it's time to welcome the next seasonal guests.

Surveying the Yard

And speaking of the next season, the butterflies are here! I saw these Azures and my first Mourning Cloak at the Botanical Garden the other day. Spring is here for sure.

Spring Azures

Mourning Cloak (terrible picture but first sighting for me in Georgia!)