Latest / Okay, But... Birds / Okay, but what makes a yard a bird paradise?
Transcript
- 0:00The default landscape is lawn.
- 0:02We've got 44 million acres of lawn.
- 0:05That's crazy.
- 0:06That's an area bigger than New England.
- 0:09Yeah.
- 0:10That 135 million acres of residential landscape is five times the area that we are managing in our national parks.
- 0:42You, and hopefully the birds in your yard, are in for a treat.
- 0:44So right off the bat, be prepared to leave a comment, like, and subscribe.
- 0:48Most people have a mental image of a bird-friendly yard.
- 0:51And basically, it's a feeder, a birdbath, and maybe one decorative little birdhouse that looks like it has a mortgage.
- 0:57And sure, feeders are great.
- 0:58They're fun.
- 0:59They're like the slot machines of nature.
- 1:00But if we're being honest, a feeder can also give you the illusion of helping birds without actually creating the thing that birds need most, habitat.
- 1:07Because birds don't just need snacks.
- 1:09They need a yard that functions like a real place to live, especially if they're going to breed there, which is the dream.
- 1:15And the moment that really hit me wasn't in some pristine forest.
- 1:18It was on a university campus late at night, walking past a garden that had been planted with native plants.
- 1:23And it was loud.
- 1:25Not traffic loud, loud like life, deafening with calling insects, orthopterans, and all the little night soundtrack creatures you don't even notice until they're suddenly everywhere.
- 1:35Okay, but what makes a yard a bird paradise?
- 1:37Today we're talking design principles that actually matter for birds.
- 1:41To help answer today's question, we're joined by Dr. Doug Tallamy, professor in the Department of Entomology and Wildlife Ecology at the University of Delaware, and one of the people most responsible for changing how North America thinks about yards.
- 1:53Not as decoration, but as conservation infrastructure.
- 1:56If you're worried your neighbors or HOA will revolt, how do you make a habitat-first yard look intentional, designed, and cared for?
- 2:03And if you're the kind of person who needs a quick win, how fast can wildlife actually respond when you put the right pieces back?
- 2:09By the end of this episode, the goal is simple.
- 2:11You'll understand what a bird paradise yard actually is in functional terms.
- 2:15And you'll have a mental checklist that goes way beyond feeders and vibes.
- 2:19After the break, Dr. Doug Tallamy helps us design yards the way birds experience them, as food webs, shelter maps, and survival math.
- 2:26Stick around.
- 2:32So welcome back to the podcast, everyone.
- 2:34I'm really excited to have Doug Tallamy here today with us.
- 2:37Thanks for joining us, Doug.
- 2:38Happy for the opportunity.
- 2:39Thanks.
- 2:40I wanted to start off by hearing how you came to understand the value of yards as habitat.
- 2:46And then we can get into like how you actually make your yard into good habitat.
- 2:49But how did you come to that realization?
- 2:51What was the journey for you?
- 2:53Well, I was born loving nature.
- 2:54So anytime it was destroyed, it bothered me.
- 2:58I had a traumatic experience when I was in third grade.
- 3:00There was a little pond next to our house.
- 3:02And there were building houses everywhere.
- 3:04Well, that was my favorite pond.
- 3:06It's where the toads and everything were.
- 3:08And the day that the new generation of toads were hopping out into the land, a bulldozer came and buried that pond.
- 3:16Oh, my goodness.
- 3:16And I reflect back on that.
- 3:19I could have gone next door to my backyard and dug another pond.
- 3:23But it never occurred to me.
- 3:25And it didn't occur to, I mean, the mantra of the age was to save nature before we destroyed it.
- 3:31It wasn't.
- 3:32It was about conservation.
- 3:33It wasn't about restoration.
- 3:36And there's so many opportunities to put it back.
- 3:39I wish I had figured that out earlier.
- 3:42What got me where I am today was moving into our current house in Oxford, Pennsylvania.
- 3:48It was part of a farm that was broken up into 10-acre lots.
- 3:53Old farm, been farmed almost 300 years, thoroughly invaded with non-native plants.
- 3:59And the last thing I did was mow it for hay.
- 4:01So when you stop mowing, all those rootstocks of the non-natives come back.
- 4:05So when we actually moved into our 10 acres, it was 10 acres of invasive plants from Asia.
- 4:11So that was my first experience with how bad the invasive species problem is.
- 4:15Now, I am an entomologist.
- 4:16I walk around all the time and look for insects.
- 4:19And the first thing I realized, hey, there's no insects on these, on autumn olive and multiflora rose and are you on bittersweet and Japanese honeysuckle and so on.
- 4:27So I actually saw that as a research opportunity.
- 4:30Other people weren't talking about that.
- 4:32You know, how are these plants destroying the local food web?
- 4:35So we, of course, wanted to get rid of these plants.
- 4:39My wife did most of it.
- 4:41And we started planting the natives.
- 4:42And I got to see how quickly...
- 4:45nature restores herself.
- 4:46She's extremely resilient.
- 4:48If you put what she needs back, she'll recolonize right away.
- 4:52I have since been counting the number of caterpillar species that are using our yard as a home.
- 4:58And I'm up to 1,366 species so far.
- 4:59I mean, it keeps going every year.
- 5:02That's amazing.
- 5:04Because we put the plants that they need back.
- 5:07So that convinced me this really works, which convinced me I need to tell other people to do this too, because...
- 5:15It's going to be 135 million acres of residential landscapes and we've got to restore them.
- 5:21Yeah, definitely.
- 5:22I guess along that line, I mean, you're an entomologist and I'm an ornithologist.
- 5:26Birds eat insects.
- 5:27And so these yard naturalization projects can have really big impacts on all kinds of different wildlife.
- 5:33And I'm wondering from a bird perspective, what are the kind of top things if someone's thinking about turning their yard into habitat that they should be thinking about?
- 5:41But one of the things we discovered along the way is not just that birds need insects.
- 5:46They need particular insects, particularly when they're rearing their young.
- 5:49They really focus on caterpillars and they need a lot of them.
- 5:53So we discovered the chickadee, tiny little bird, third of an ounce, needs between 6,000 and 9,000 caterpillars to get the young just to fledge.
- 6:03And then they feed them caterpillars another 21 days after that.
- 6:07Where are all these caterpillars going to come from?
- 6:09They're going to come from the plants that support caterpillars.
- 6:11But not all plants support caterpillars equally.
- 6:15That led us to the Keystone plant concept.
- 6:18Certain plants, actually 14% of our North American native plants are supporting 90% of the caterpillars that support these bird food webs.
- 6:26So if you really want to help the birds, you've got to plant the plants that are going to make the food that they need when they're breeding.
- 6:32If you have birds come to your feeder and fly away but are not breeding on your property, you still have work to do.
- 6:38You've got to get them to breed on your property.
- 6:40which means they need all those caterpillars right there because they only forage about 50 meters from the nest.
- 6:47They're not flying five miles down the road to the nearest woodland.
- 6:50Yeah.
- 6:51So that's our goal.
- 6:52That's what we have to do is get breeding birds on our property.
- 6:57And so which plants should we be focusing on in that context, then, if it's this subset of native plants that are the really good ones?
- 7:03Right.
- 7:04It depends on where you live.
- 7:05But in 84% of the counties of the U.S. where oaks occur, they are number one by far.
- 7:11They're supporting more than 1,000 species of caterpillars nationwide.
- 7:15Where I live in the Mid-Atlantic States, it's 557 species.
- 7:19Now, there are other top plants.
- 7:22Brunus, native cherries in the Mid-Atlantic support 446 species.
- 7:27Native willows are very high.
- 7:29As you go farther north, willows become more important.
- 7:32In the dry riparian areas of the West, cottonwood is really important.
- 7:37But those are the ones that are creating most of the insect biomass that supports our breeding birds.
- 7:43So we can easily make an all-native landscape that supports very little if we choose the plants that don't support a lot of caterpillars.
- 7:51So we want to focus on the ones that do.
- 7:53Yeah, for sure.
- 7:54And I think when people think about like, how can I change my yard to, you know, incorporate more native plants and be better for native wildlife?
- 8:01I don't think trees are ever at the top of the list of things people think about, like trees and shrubs, which you just said, you know, oak, prunus, willows, cottonwoods.
- 8:11I think people think, oh, I'll plant rudbeckia or I'll plant lobelia or whatever.
- 8:15So that's a really important point that if you really are wanting to change the
- 8:20the value of your yard for birds.
- 8:21Like you should be thinking big, thinking about trees and shrubs and those sorts of things.
- 8:26That's what you need to do for birds.
- 8:28But of course, most people, when they think about insect decline, they think about pollinators.
- 8:32Right.
- 8:32And they actually think about the honeybee
- 8:35Which is not a native bee.
- 8:38And we do want to support our native pollinators, for sure.
- 8:40We've got about 4,000 species of native bees.
- 8:43And naturally, you think about flowers.
- 8:46But, you know, our woody plants are supporting native bees, too.
- 8:50Most of those are flowering plants, even oaks that are wind pollinated.
- 8:54The bees go to those catkins in the spring and gather up that pollen.
- 8:58They don't move it to the female part of the flower of the oaks.
- 9:02So they're not actually pollinating, but they are using oak pollen.
- 9:05The default landscape is lawn.
- 9:08We've got 44 million acres of lawn.
- 9:10That's crazy.
- 9:12That's an area bigger than New England.
- 9:15That 135 million acres of residential landscape is five times the area that we are managing in our national parks.
- 9:24So these are huge areas that we can convert to functional ecosystems.
- 9:29I think of the four major ecological goals of our yards.
- 9:33One is to support those pollinators.
- 9:35One is to support a food web so you actually have the birds.
- 9:38One is to sequester carbon so we can help climate change.
- 9:41And the other one is to manage the watershed in which your property lies.
- 9:46Lawn doesn't have any of those things.
- 9:48So we need to reduce the area that's in lawn.
- 9:52And that's where I would focus.
- 9:54If you're in an area that supports trees, so we're not talking about the high dry plains of Colorado, but we're talking about most of the other parts of the country.
- 10:04Adding a tree to your property is the easiest thing to do and putting a bed under it.
- 10:09And then all of a sudden you have less lawn.
- 10:11Yeah.
- 10:12Do that two or three times and then you have a lot less long.
- 10:15So you don't have to do it all at once.
- 10:17That becomes a big job.
- 10:18Just pick at it over the years.
- 10:20It becomes a hobby and you can get where you need to go.
- 10:23Yeah, and I think that's a great point too, because I think when people start to consider like, oh, what could I do?
- 10:27I don't know.
- 10:28Maybe this is just me, but I'm kind of like, ah, do it all right away versus like take my time, make a plan, build in structure over time.
- 10:36And so that's a great point to highlight for everyone.
- 10:39You don't have to do it all at once.
- 10:40And that you do have to think about where you are.
- 10:42You know, I'm not suggesting anyone here should be planting oaks, although it's hilarious how many water demanding trees have been planted in Denver where we don't have enough water for them.
- 10:52From that perspective, I know that you're not in one of these drier climates, but do you have particular advice for folks who are when they're thinking about naturalizing their yards?
- 11:03Well, you want to plant the plants that belong in your eco region.
- 11:07So if you're in a very dry area, you're talking about xeriscaping.
- 11:11The temptation there, and I'm thinking of Southern California, is to use Mediterranean plants because they're from a drier region and they're in the trade.
- 11:22So everybody says, yes, I'm using water efficient plants.
- 11:26But they're not going to support the insects either.
- 11:28So use the native dry adapted plants.
- 11:32There's a lot of good examples of xeriscape yards that require no maintenance.
- 11:37They're beautiful and they're doing the best to support the wildlife around them.
- 11:42An interesting phenomenon.
- 11:44You know, I live in the East and there's a lot of trees, a lot of green.
- 11:48You would think there'd be caterpillars all over the place and moths all over the place.
- 11:52And there kind of are.
- 11:55But I did some mothing in Arizona and I thought, oh, I'm not going to get much here.
- 12:01It was much more in Arizona.
- 12:03Even though it was dry, it's not that green.
- 12:05And I wondered where all these things were coming from.
- 12:08So it turns out that...
- 12:11even the dry areas can be really, really productive.
- 12:14So if you use the right plants.
- 12:16They just need the right host plants.
- 12:17Exactly, yeah.
- 12:22I'm curious in your own experience, when you started thinking about, okay, I want to turn my new property into something more natural, re-naturalize it.
- 12:29I think a lot of people get hung up on where do I get those plants?
- 12:34And how am I sure that this is actually what they're telling me it is?
- 12:38Because I've seen, since I started thinking about yard naturalization, there are certainly more things available commercially.
- 12:45But sometimes there are other things labeled commercially that are native that are not.
- 12:49And so how have you navigated that space?
- 12:52Have you seen that change?
- 12:53And what recommendations do you have for folks who want to find native local seed stock or plant stock?
- 12:59Right.
- 13:00You can start.
- 13:01If you don't know about the local nursery, start with your state and native plant society and ask them who is selling the right plants where you live.
- 13:09That would be a great place to start.
- 13:11Don't start at Home Depot or Lowe's.
- 13:13No.
- 13:14Those are national box stores that are selling plants from anywhere because they're still buying into the misconception that plants are just decorations.
- 13:24So go to a reputable nurseryman.com.
- 13:27Now, there are nurserymen that aren't that rep real.
- 13:30They'll hire summer helpers, and you walk in and say, I want a native plant.
- 13:34And they say, well, this is native, meaning if you go out in the woods, you'll find it.
- 13:38What it really is, is an invasive non-native.
- 13:41That does really well in that place, probably.
- 13:44Yeah, yeah.
- 13:45You just have to find somebody you trust.
- 13:47Now, the demand for native plants does exceed the supply right now.
- 13:52But that is a business opportunity and more and more people are specializing in natives and they're getting easier to find.
- 13:59I don't know.
- 14:00I've seen so many beautiful yards that are landscaped entirely with native plants, like obviously supporting a lot.
- 14:06But I think the first thing a lot of people think about is like, oh, my yard's going to look weedy.
- 14:10Or in some cases, like an HOA may ban the way certain yards look.
- 14:15And I wonder...
- 14:16what kind of discussions you've had with folks about that?
- 14:18Like, how do you meet the demands of an HOA or avoid this?
- 14:24I don't, I like a yard that looks natural, but not everyone does.
- 14:27Right.
- 14:28Well, there are misconceptions about natives, and that is one of them, that they're going to be wild and messy.
- 14:34Yeah.
- 14:34So you can start, if you're talking about whether you're an HOA, by not using the word native.
- 14:39Just say, I'm going to make a beautiful yard.
- 14:41Mm-hmm.
- 14:42What you're doing is getting more plants into your landscape, less lawn.
- 14:46The lawn you have, though, that's a cue for care.
- 14:49That should be mowed and manicured.
- 14:51You don't have to put any stuff on it.
- 14:53But if you do that, it shows that what you're doing there is intentional.
- 14:59people say, I'm just going to stop mowing my lawn.
- 15:01That's exactly what HOAs don't want.
- 15:04And it's, you know, tall European grass isn't going to support anything either.
- 15:07So lawn is the perfect plant to walk on.
- 15:11So you can use it to line the beds that you're adding to your yard, line the sidewalk, line the driveway.
- 15:18And it shows that this is a design landscape.
- 15:22Something else that helps really is one of these wildlife signs, you know, homegrown national park signs saying...
- 15:29I am, I am, I'm supporting wildlife here, but I'm also creating ecosystem services.
- 15:35You're doing all these wonderful things for society and you're not even charging anybody.
- 15:38It's great.
- 15:40Yeah.
- 15:40So for Homegrown National Park, tell us more about that because that's this amazing nationwide project now and I'd love everyone to hear a lot more about it.
- 15:49Well, you know, we have parks, we've got preserves all over the place, but we are in this great defaunation event.
- 15:56We're not in the sixth extinction event yet, but we're headed in that direction where almost all the creatures that are out there are declining in abundance.
- 16:06And if they keep declining, they will go extinct.
- 16:08The reason they're declining is because the parks and preserves we have are too small and they're too isolated.
- 16:14Who's in between them?
- 16:15We are.
- 16:16It's our private property.
- 16:18It's our parks, our corporate landscapes, our schools and our hospitals and everything.
- 16:23But they all have landscapes.
- 16:26And right now they've been landscaped with one thing in mind, and that is aesthetics.
- 16:30So now we want a landscape thing with two things in mind, aesthetics and ecological function.
- 16:34And if we do that, we've expanded the viable habitat of those parks and preserves.
- 16:40That's the solution.
- 16:42The problem is the people that own all of that private property, that's about 80% of the lower 48 states, don't know that that's a goal.
- 16:50So that's where Homegrown National Park comes in.
- 16:52That is our mission, is to educate the rest of the country about their responsibilities in conservation.
- 17:00The future of conservation is with the private landowner because most of the country is privately owned.
- 17:06So we have to fill in the educational blanks that we didn't get when we were in school.
- 17:13And it's everybody's personal responsibility to take this on because we all need healthy ecosystems.
- 17:20Nature's not optional.
- 17:21We absolutely depend on it.
- 17:23And if you, quote, own a piece of the earth, you've got to steward that piece in a functional way.
- 17:30So the more people that join Homegrown National Park, and it's free, by the way,
- 17:36the greater the movement will grow.
- 17:38What you're doing really is making a pledge to, again, elevate conservation in your daily life.
- 17:46And it's a process.
- 17:47It will happen over time.
- 17:49So you can join Homegrown National Park before you've done anything.
- 17:52It's just, you know, I am promising to reduce my lawn.
- 17:55I am going to put that oak in there.
- 17:57I am going to plant an aster in a flower pot on my balcony.
- 18:01So it really doesn't have...
- 18:03It doesn't matter how small your effort is, as long as you're moving in the right direction.
- 18:08And when I talk about changing the culture and elevating the importance of conservation, that includes how you vote, because that's tremendously important in terms of what's happening in this country.
- 18:17Yeah, definitely.
- 18:18No, I completely agree.
- 18:19I love that it's a pledge too.
- 18:21And then you have access to people that can give you this information about, like, what can I do?
- 18:26All I have is, like you said, if all I have is a balcony, I think a lot of people feel like, well,
- 18:31I can't do anything.
- 18:32But an aster, yeah, an aster in a pot can be this amazing nectar source, food source, and all of these other things.
- 18:38So, yeah.
- 18:39We have a section on the homegrownnationalpark.org website about container gardening.
- 18:45So the best native plants for containers in your eco-region are right there on our site.
- 18:51That's why you go to our site.
- 18:52There's a lot of information on there.
- 18:57If you're into international travel, go to Singapore.
- 18:59Mm-hmm.
- 19:00It is the greenest city in the world because they have focused on that for the last 30 years.
- 19:06Singapore is now an ecotourist destination.
- 19:09The center of the city, people go there to see horn bells and all kinds of things that are thriving right in the middle of the city because they designed it that way.
- 19:18We could do that with our cities.
- 19:19We could do that with our suburbs.
- 19:21We just have to make it an important goal.
- 19:27We asked a simple question.
- 19:29What kind of a landscape is required to sustain a population of Carolina chickadees?
- 19:35And by sustain, I mean not one breeding bird, but you have a whole population and they can be there, quote, forever, as long as you keep those resources there.
- 19:44Yeah.
- 19:44But we wanted to do it in a residential neighborhood.
- 19:47So we had volunteers inside the Beltway at Washington, D.C.,
- 19:55And we got an NSF grant to do it.
- 19:57Former PhD student Desiree Narango.
- 20:00Desiree put together a whole team of volunteers during the, we call them interns.
- 20:05They weren't volunteers.
- 20:06They got paid.
- 20:08It was a five-year study.
- 20:09It was a huge, huge thing.
- 20:10It was a huge study, yeah.
- 20:12But what she found, she found lots of things.
- 20:15But the take-home message for a lot of people is that if you have 70% of your
- 20:20plant biomass native, chickadees will be able to reproduce year after year after year.
- 20:27Less than that, and the populations tend to crash.
- 20:30So that's that 70-30 figure that people are throwing around.
- 20:35And it certainly worked in D.C.
- 20:38The problem I have is that I'm hearing that all.
- 20:41I hear that in California.
- 20:43This is the rule 70-30.
- 20:45Remember, this was one study with one bird in one place.
- 20:50And we don't want to reify it.
- 20:53I mean, it's the best information we have.
- 20:55Nobody else has done it.
- 20:57And what it says is native plants are important.
- 21:00The more you have, the more life you're going to support.
- 21:03What we didn't know at the time was the role of keystone plants.
- 21:07So how many of that 70% need to be keystone plants for it to work really well?
- 21:12And if you have all keystone plants, maybe it only has to be 50%.
- 21:17We don't know.
- 21:17There's a lot more work that needs to be done.
- 21:20But again, the more powerful plants you can get into your landscape, the more life is going to be there.
- 21:25That's really what the take-home message is.
- 21:27Yeah, I love that take-home message.
- 21:28And if someone's like, what do I do, Doug?
- 21:30How do I actually start this path of changing my yard into something functional for wildlife?
- 21:36We have thought about plants as if they're decorations forever.
- 21:41They are decorations.
- 21:42They're beautiful.
- 21:43And we do want to decorate our yards.
- 21:44We want to fit in with our neighbors.
- 21:46We want to be high status.
- 21:48So we have to use plants to do all those things.
- 21:50But at the same time, we want to choose plants that are ecologically functional.
- 21:55We do have beautiful native plants.
- 21:57I can show you gorgeous native gardens.
- 21:59None of them are maintenance-free.
- 22:00Yeah.
- 22:01So you're not going to use natives so that you never have to do anything again.
- 22:06We have to guard against the invasion of these non-natives.
- 22:09We've got 3,300 species of plants from other continents that are resident here now in our neighborhoods, but also our wild areas.
- 22:20And they're really degrading the food web.
- 22:22And they keep trying to invade any garden that we put in there.
- 22:26Yeah.
- 22:27Kind of deserve that because we brought them in and sold them in our nursery.
- 22:31So you have to be vigilant about that.
- 22:32But those are the big challenges that we face.
- 22:36Yeah.
- 22:36A garden that is predominantly native plants still requires attention.
- 22:40All right.
- 22:41We've reached the part of the show we call That's BS or That's Bird Stuff, where we give our guests an opportunity to debunk a myth that ruffles their feathers.
- 22:47So Doug, what do you want to call BS on?
- 22:52And BS that native plants are wild and messy and that you can't use them in a residential landscape.
- 22:59They're wild and messy if you make them wild and messy.
- 23:02I can give you a 100% non-native landscape that's messy, you know, and you get thrown out of your HOA.
- 23:07So it's not the nativity of the plant that counts.
- 23:10It's how you maintain your property.
- 23:12Exactly.
- 23:13Excellent point.
- 23:14Thanks so much.
- 23:14Well, thanks so much for joining us today, Doug.
- 23:16Appreciate you taking the time.
- 23:17Yeah, you had a lot of fun.
- 23:18Thanks, Scott.
- 23:23Birds are dinosaurs, and around here, we like our snacks.
- 23:26So we end each episode with a dinosaur nugget.
- 23:28Today's nugget is birds don't need more snacks.
- 23:30They need habitat.
- 23:32And habitat isn't about what looks green to us.
- 23:34It's about what your plants produce, especially insects.
- 23:37So the real yard design question becomes, which plants actually promote things like caterpillars?
- 23:42And here's the twist.
- 23:43Not all native plants are equal.
- 23:44A small set of keystone native trees and shrubs do an outsized amount of the work, turning sunlight into insect life and insect life into birds.
- 23:52Meanwhile, a yard can be full of beautiful plants that look lush and still function.
- 23:55P.S.
- 23:56Home Depot and Lowe's should not be our first stop on this journey.
- 23:59That's a wrap on this week's episode.
- 24:01Okay, but what makes a yard a bird paradise?
- 24:03Thanks for listening, watching, and supporting our show.
- 24:05We'll catch you next time.
- 24:06Bye.
- 24:12Okay, but birds is hosted by Scott Taylor with production and creative by Zach Carl.