Wednesday, June 3, 2015

Enticing butterflies to visit your north Texas yard


 
Black Swallowtail


The life of a butterfly is a perpetual gamble.  In a span of a week or two, a female will lay hundreds of eggs, but only a very few will become adult butterflies. Most will die. Knowing the chacteristics of north Texas butterflies will greatly increase your chances of having them visit your landscape,  i.e. know “what makes a butterfly tick”.

About 440 species of butterflies have been reported in Texas. They are all vulnerable to disease and predators during the larval (caterpillar) stage in the spring. Just before this time, the mother looks for what are called “host plants” to lay eggs on. The caterpillars must be able to find the correct host plants. The absence of these plants affects the number of butterflies. Sometimes the host plant is considered a “weed” and is destroyed by the gardener often with indiscriminate use of herbicides or insectiodeds. Out of each 500 eggs a butterfly lays, fewer than five survive typical backyard conditions.

This pathetic survival rate of under 1% is frustrating to landowners who try to attract the beauties by planting the host plants necessary for laying eggs and feeding larvae. Birds can be a small problem (because they have been known to feed on butterflies) but toads, frogs, lizards, rodents and snakes hunt butterflies too. By far the biggest problem, however, is humans. It is also the problem that’s most easily solved.


Red Admiral
The correct kinds of host plants for north Texas butterflies include lantana, milkweed, yarrow, parsley, mistflower, butterfly weed and all native grasses. (The term “weed” merely stems from an Old English word of the 9th century meaning “uncultivated”) A main criterion is that you need a ”mass” of the same plant species (at least a dozen), not just one or two. Plants that are native to this area are spotted more easily by butterflies, due to genetics.

If you’re serious about attracting them nothing should liberally be sprayed or spread on your landscape that’s poisonous or artificial. “Spot-spray” only in spots where there’s a specific problem. Forget most weed-killers and pesticides (butterflies and caterpillars are insects after all). Caterpillars are also often confused with more destructive bugs. For example, a homeowner might squash a green, yellow & black caterpillar on a parsley plant without realizing it will soon become a gorgeous Eastern black Swallowtail.

If you want to attract butterflies into your yard, it’s wise to remember the old saying about not counting your chickens before they hatch. Even if you do all the right things the butterflies may not come in throngs. Maybe some neighbors have sprayed a whole lot of poisons or maybe a good piece of a forest in the mountains of Mexico was cut down… it’s always a gamble!  But if you don’t give it a good try it’s a certainty that your yard will be as attractive is the Sahara Desert.
 
Monarch


 

OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton.

Sunday, May 31, 2015

Just an “old wives’ tale” that really means ”don’t get dirty”


 

 

I was watching a kids’ cartoon show on TV the other day (yes, I have grandkids). One of the fables that was taught by a supposedly-wise old owl (with an English accent) was that humans’ shouldn’t touch or handle a bird’s eggs or babies. Only another bird can so this.   WRONG on so, many levels!

For one thing, most birds have little or no ability to smell, and would have great difficulty smelling a human’s old fingerprint.   This observation would also apply to to another species of bird too (if a Cowbird touched a baby Bluebird, for instance). Also, a parent bird would appreciate your moving a bird to safety, instead of seeing it (for example) run over by a car. Sometimes it’s necesary and wise to move a baby bird (“fledgling”) to a safe location.  Just make sure the new location is nearby, because a parent bird is almost certainly watching from a nearby perch,  ready to feed or instruct if needed.

A fledgling bird should not be “kidnapped”, taken back to tour house for instance. Very often, baby birds are on the ground and cannot fly for a few days on purpose. The parents are teaching it to fly and seek food on their own;  it’s called “growing up”.  And adult birds do a much, much better job of teaching this than you or I.  

The overall lesson is this:  if you spot a fledgling on the ground in a dangerous place (like in the road) don’t hesitate to pick it up and move it to a nearby, safe location. Most of the time, however, just leave it where it is, knowing that a parent bird is close by watching for danger, which includes “kidnapping” by a well-meaning human.

 

Wall-to-wall rain, and how it affects our birds.  For the most part, our constant and abundant rain has almost no affect on birds. They adapt very well.

Eastern Meadowlark
An extreme but infrequent example is ground-nesting birds such as meadowlarks and killdeer. Particularly the ones who chose to nest in low areas probably got washed away. Adult birds could just fly away but the fledglings and eggs met a similar fate to having their nesting grounds bulldozed for a parking lot, housing subdivision , shopping center and such.

Killdeer
Actually all the rain wakens dormant seeds, and translates into more and bigger plants. Followed by more food and shelter. Temporarily however, most of the natural nest material is wet and waterlogged. So I simply put small twigs and pieces of string or yarn (no longer than 3”) in shallow bowl, and put it outside, under an overhang.

 

OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton.

Sunday, May 24, 2015

BOTH foraging experts are in north Texas


 
Yellow-rumped Warbler
There are only two species of birds in all of North America that forage for food so effectively! The Red-breasted Nuthatch and the Yellow-rumped Warbler use all five foraging methods, and they could be in your yard right now! The five methods are: picking insects off tree trunks, foraging on branches, picking insects from foliage, hawking after insects in the air, and hovering.

 

Odd fact about forest fires        Forest fires unquestionably have a deplorable, lasting impact on the local population. Fortunately, mature birds can simply fly way. However, “firebreaks” such as those created by the necessary actions of bulldozers result in long-term habitat destruction; causing more wild animal deaths, birds included, than the forest fires themselves


 

 

 

OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton

 

Sunday, May 17, 2015

..What’s a “sparrow hawk”?


American Kestrel


 
American Kestrel
It’s just an old, regional name for a kestrel. The American Kestrel is fairly commonly seen in north Texas at this time of year - especially hovering over treeless fields, hunting for small prey (although it’s here all year). It is actually neither a hawk nor a sparrow.

 
Other outdated names;  Peregrine falcon was a “duck hawk”. Chipping Sparrow was called a “hairbird” for some reason. Today we sometimes hear a Goldfinch referred to as a “wild canary”.

 

 

Yes we have no bananas      Butterflies love spoiled bananas – don’t ask me why. They also go for mushy fruit like pears and peaches. (but don’t leave them outside too long or you may have other visitors). This is what becomes of fruit if nature takes its course – animals eat some and the rest nourishes the soil.

 

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OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton.

 

Wednesday, May 13, 2015

Take that you little interloper, masquerading as a sparrow!


 

 
As you may know, the house sparrow is an undesirable little bird in most areas. It’s not really a true  “sparrow” either, actually being a weaver finch, and having been brought to this country against its will around the late 1800s.  True sparrows migrate, and breed in Canada (mostly).

House Finch
It may take centuries, but a common backyard bird, native to the west coast, and common here, is gradually out-competing it. According to Cornell’s Lab of Ornithology, the House Finch is learning how to get the best nesting sites, food and such - things the pesky house sparrow needs. Neither is common in undeveloped grasslands or forests.
House Finch

 

 

 



OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton.

Sunday, May 10, 2015

Does your yard have the stuff that a Mockingbird eats?


 
N. Mockingbird
About half the diet of a Northern Mockingbird (our state bird!)  is fruits and berries. The other half is insects (including insect-flavored suet, sometimes). As a Landscape Architect in Texas, I’ve seen that they’re partial to native hollies, beautyberry, agarita, soapberry and Mexican plum. However, if all the bugs in your yard are killed, Mockingbirds (typically a very common bird here) will probably go elsewhere.

 

 
 
 
 
 
A moveable feast for birds        Excellent plants for containers in north Texas, to attract birds and butterflies like crazy, are Lantana, Coneflower, Gregg’s Salvia and Mistflower. Large pots of these (odd numbers like 3 or 5 look best) work well on a patio, or anyplace else where lack of space is a concern (like an apartment balcony). In a large grouping of pots, I like to plant one with a decorative native grass like Sideoats Grama.

 

 

OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton.

 

Wednesday, May 6, 2015

It’s still a disaster for humans and birds



Meadowlark
Summer Tanager
The drought in north Texas is still bad – even with all the recent rains we’re not out of the woods by a long shot. Recent rains, though certainly welcome, only reduced what’s named an “Extreme Drought” to a “Moderate Drought” or better. We still have no “cushion” of water in ground and our lakes to get us through the next severe drought (which will come).
 

According to the U.S. Dept. of Agriculture, native plants can withstand droughts, so our birds are genetically programmed to seek them out (for food, nest material etc. So if you like birds, plant native Texas plants.Conversely, if you don't give a #&*@? about water or birds, plant whatever's on sale.
Bell's Vireo
 
Dicksissel

 

 
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  2. OWEN YOST, in addition to being a blogger, is a licensed Landscape Architect emeritus who has lived and worked in north Texas for over 30 years. He is the recipient of a Lifetime Achievement Award of the Native Plant Society of Texas, and is a member of the American Society of Landscape Architects (ASLA), International Federation of Landscape Architects, National Wildlife Federation and the Audubon Society. His office is at Yost87@charter.net in Denton
 
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