Thankful for Turkeys (and Turkey Vultures)

Dr. James J. S. Johnson

 For the invisible things of Him [i.e., the God of the Bible] from the creation of the world are clearly seen, being understood by the things that are made, even His eternal power and deity; so that they are without excuse [αναπολογητους]; because that, when they knew God, they glorified Him not as God, neither were thankful; but they became vain in their imaginations, and their foolish heart was darkened. (Romans 1:20-21)

TURKEY VULTURE perching
Wikipedia / Charles J. Sharp photo credit

The two inexcusable sins, routinely committed by evolutionist fools [and notice that the term “fools” is factually appropriate, because Romans 1:21 says that “their foolish heart was darkened”], are the inexcusable failure to glorify God as the Creator He ubiquitously proves Himself to be — plus the inexcusable failure to give thanks unto Him for the uncountable blessings that He caringly and providentially provides to us all (Romans 1:18-25; Acts 14:17; Daniel 5:23; Psalm 14:1).

Meanwhile, speaking of giving thanks, Thanksgiving is fast approaching; many folks are thinking about the American Turkey. See “Strangers and Pilgrims (and the American Turkey)”, posted at https://leesbird.com/2014/11/25/strangers-and-pilgrims/ .

TURKEY VULTURE “beauty contest” mugshot
HighlansCenter.org / Felipe Guerrero photo credit

But what about another large bird that we often see, the Turkey Vulture? This scavenger, known scientifically as Cathartes aura, is actually a very valuable neighbor in whatever habitat they inhabit.

Turkey vultures are most interesting creatures.  One can tell, just by looking at them, that they are well-suited to their task as disposers of dead things.   Their beaks and feet lack the power and the design for killing living things, though their hooked beaks allow them to free the last shred of meat clinging to a carcass.  Their heads are completely featherless, which makes it easier to clean them of bacteria and parasites encountered while rooting around in dead carcasses.  Turkey vultures nest on crags, caves and clefts in rock piles.  They don’t bother to build a nest.  The female lays her two brown, mottled eggs on the bare ground and incubates them for forty-one days.   When the babies hatch, they are fed exclusively on a diet of regurgitated carrion.   (Yumm!??) These birds sound totally disgusting, right?  Actually, they are quite impressive.  They are a very large bird—males and females are quite similar in appearance, with shiny black feathers.  They have a wingspan of up to six feet, and the underside tips of their flying feathers are greyish white.  When they are observed soaring aloft on the thermals, they are quite beautiful indeed, and beauty is in the eye of the beholder. [Quoting Sandy Stoecker, Highlands Center for Natural History naturalist]

But, how did the Turkey Vulture get its valuable role in the so-called “circle of life” neighborhood (i.e., within the dynamic life-and-death ecosystem of this fallen (i.e., good-yet-“groaning”-with-sin and-death) world? The fallenness of our world is thanks to Adam (Romans 5:12-21); however, the gift of life–from the beginning–plus the providential and redemptive sustaining of life in this fallen world–is thanks to our Lord Jesus Christ, Who is both the life-giving Creator (John 1; Colossians 1; Hebrews 1) and the life-restoring Redeemer (Romans chapter 8, especially Romans 8:21-23).

 Because the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God. For we know that the whole creation groaneth and travails in pain together until now. And not only they, but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body. (Romans 8:21-23)

TURKEY VULTURE in Canada
Wikipedia / Peter Burian photo credit

It’s not by good luck that turkey vultures can find rotten carrion, gobble it down, and not die of food poisoning. Vultures have powerful senses of sight and smell; they detect dead animals from afar. Equipped by God for scavenging in this fallen world, they serve as garbage collectors/processors, picking apart and eating roadkill and other carcasses.

Why don’t they get sick or die of botulism? The acidity of vultures’ digestive tracts is astounding. The digestive juices in their stomachs can reach a pH between 1.5 and 1.0, more corrosive than car battery acid and caustic enough to instantly denature to death almost any bacterial or viral pathogen! [Chen, Y. et al. 2023. Vultures as a Model for Testing Molecular Adaptations of Dietary Specialization in BirdsAvian Research. 14: 100128; Buechley, E. R. and C. H. Sekercioglu. 2016. VulturesCurrent Biology. 26 (13): R560–R561. Genesis 15:11 reports on carrion-seeking birds whose behavior resembles that of vultures.]

TURKEY VULTURE soaring
Wikipedia / Charles J. Sharp photo credit

In other words, if the vultures’ Creator had not constructed their stomachs with such germ-destroying acidity, the vultures themselves would quickly become dead meat. These built-in (and interactively dynamic) habitat-fitting traits utilize what Dr. Randy Guliuzza calls “continuous environmental tracking”, linked to providentially installed equipment that adjust to the outside world that the vultures live in. God’s providence is thus obvious to — and logically recognized by — honest observers, because God’s glorious craftsmanship is what the apostle Paul calls “clearly seen” (Romans 1:20).

For in-depth analysis of these providential bioengineering wonders (illustrated by God’s amazing creatures), see Dr. Randy Guliuzza’s series on Exploring Adaptation from an Engineering Perspective, posted (e.g.) at http://www.icr.org/article/exploring-adaptation-from-engineering-perspective//1000 — which introduces the truth-seeking reader to Dr. Guliuzza’s series, posted at http://www.icr.org/home?f_search_type=icr&f_keyword_all=&f_keyword_exact=Engineered+Adaptability&f_keyword_any=&f_keyword_without=&f_search_type=articles&f_articles_date_begin=5%2F1%2F2017&f_articles_date_end=12%2F31%2F2019&f_authorID=203&f_typeID=11&section=0&f_constraint=both&f_context_all=any&f_context_exact=any&f_context_any=any&f_context_without=any&module=home&action=submitsearch .

TURKEY VULTURE scavenging dead armadillo
Sound View Camp photo credit

Meanwhile, it’s sad that arrogant evolutionists, like Joel Duff, are self-blinded to these clearly seen Christ-honoring wildlife ecology facts, but they show themselves as self-blinded, habitually, “without excuse” [αναπολογητους] — see Romans 1:18-25 (especially Romans 1:20.)

But, for those with eyes to see it, we can enjoy God’s brilliant bioengineering displayed in Turkey Vultures — and also in the American Turkey — as we approach Thanksgiving with an attitude of gratitude.

Black-headed Gulls and Great Black-backed Gulls: Birdwatching in the Scottish Hebrides, Part 4

Black-headed Gulls and Great Black-backed Gulls: Birdwatching in the Scottish Hebrides, Part 4

Dr. James J. S. Johnson

For the earth shall be filled with the knowledge of the glory of the LORD, as the waters cover the sea. 

(Habakkuk 2:14)
Black-headed Gull (BirdGuides.com photo credit)
Great Black-backed Gull (National Audubon Society photo credit)

The islands of Scotland’s Outer Hebrides are a familiar territory for various seagulls, including two in particular: (1) the largest seagull, the low-sounding “laughing” Great Black-backed Gull (Larus marinus); and (2) a much smaller yet loud-“laughing” Black-headed Gull (Larus ridibundus, a/k/a Chroicocephalus ridibundus).

Great Black-backed Gulls are large (more than 2’ long, with wingspan about 5’ wide; often males weigh up to 4 or 5 pounds, while females weigh slightly less), deserving their nickname “King of Gulls”. Thanks to God-given toughness these gulls can survive and thrive in coastlands of the North, breeding in parts of Russia, Scandinavia, along Baltic coasts, the British Isles, Iceland, Greenland, the Faroe Islands, plus the Atlantic seacoasts of Canada and America’s New England shorelines.  In winter many of these gulls migrate south.

In Nornian, the ancient Old Norse-derived language of the Shetland Islands, the Great Black-backed Gull was once called swaabie, from swartbak, meaning “black back”whereas in AD1758 Karl (“Linnaeus”) von Linné taxonomically designated theseseagulls as Larus marinus, denoting a marine seagull/seabird (from Greekλάῥος). In a previous study (titled “Birdwatching at Staffa, near Iona: Puffins, Shags, and Herring Gulls”), the Great Black-backed Gull was noted as a prominent predator of Atlantic puffins, yet this gull avoids puffins who nest near humans. 

BLACK-HEADED GULL perching (Nat’l Audubon Society photo credit)

However, it is not just the Atlantic puffins that must beware the apex-predatory pursuits of Black-backed Gulls, because these gulls also prey on terns and many other birds, as well as almost any other organic food smaller than themselves, living or nonliving, if they can swallow it.  Accordingly, these scavenging gulls are attracted to garbage dumps filled with human wastes, as well as to egg-filled nests of smaller birds, plus available rodents (e.g., rats) and lagomorphs (e.g., rabbits).  Likewise, these bullies practice “klepto-parasitism”, i.e., aerial bullying-based robberies of food from other birds—when accosted by Great Black-backed Gull, the smaller birds drop their food—as the Great Black-backed Gull chases the dropping food, to capture it in the air, the robbery victim flies away to safety. 

During the winter months these gulls spend less time over land, because the sea itself then offers better opportunities for food—especially lots of fish!  Any fish who are close to the ocean’s surface are at risk when these gulls scout for catchable food. In fact, quantitative studies of their stomachs show that marine fish (such as herring) are the primary diet of Great Black-backed Gulls, although they also eat other birds (like herring gulls, murres, puffins, terns, Manx shearwaters, grebes, ducks, and migrant songbirds), plus small mollusks (like young squid), crustaceans (like crabs), marine worms, coastline insects and rodents, as well as inland berries, and lots of garbage and carrion (found in places as diverse as saltmarshes, landfills, parking lots, airport runways, piers, fishing docks, surface ocean-waters, etc.). 

[See William Threlfall, “The Food of Three Species of Gull in Newfoundland”, Canadian Field-Naturalist, 82:176-180 (1968). See also, accord, Kirk Zufelt, “Seven Species of Gulls Simultaneously at the Landfill”, Larusology (http://Larusology.blogspot.com/2009/11/7-species-of-gulls-simultaneously-at.html ), posted Nov. 15, 2009.]

BLACK-HEADED GULL with “ankle bracelet” (Oslo Birder photo credit)

Like the above-described Great Black-backed Gull, the gregarious (i.e., colony-dwelling) Black-headed Gull is notorious for its omnivorous scavenging and often-predatory habits, opportunistically frequenting oceans, intertidal beaches and estuarial coastlands, marshlands and other inland wetlands, lakes, rivers, and even agricultural fields. These gulls, as breeding adults, sport dark-chocolate (almost black) heads.

Black-headed Gulls can soar high in the air, swim in the ocean, and walk along a sandy beach—they are equally comfortable moving to wherever they want to go to.  These noisy seagulls sometimes appear to “laugh” when they call.  Like other seagulls, they enjoy eating fish—sometimes they dip their heads under the tidewater surface, while swimming.  When scouting along a coastal beach, these gulls probe for coastline critters (which they probe for and snatch).  Also, they are fast enough to capture flying insects, which they catch “on the wing”. 

BLACK-HEADED GULL
(Shells of Florida’s Gulf Coast photo credit)

Gulls come in many varieties, plus some of these varieties are known to hybridize. For example, Great Black-backed Gulls (Larus marinus) hybridize with Herring Gulls (Larus argentatus). Black-headed Gulls (Larus ridibundus) often hybridize with Mediterranean Gulls (Larus melanocephalus), and also with Laughing Gull (Larus atricilla) and Common Gull (Larus canus).  Other hybrids exist, too, and many of these gull hybrids have been verified by genetics (i.e., DNA parentage verification).

><> JJSJ   profjjsj@aol.com

[ As a boy this author watched seagulls, both inland and at seacoasts, with wonder. God made them all! A half-century later, I still watch seagulls (and many other birds) with wonder.  “He (God) does great things beyond searching out … and wonders without number.”  (Job 9:10) — God shows how wonderful He is! ]

Black-headed gull - Norfolk Wildlife Trust
BLACK-HEADED GULLS with breeding plumage (Kevin Woolner/Norfolk Wildlife Trust photo credit)