A site dedicated to sharing general care of mute swans


April 9th, 2022 | Posted by LadyNerkle1 in DO NOT PUT FOOD by a SWAN's NEST - (Comments Off on DO NOT PUT FOOD Near a SWAN’s NEST)

Nesting Swans
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Nesting Swans Who Eats Who

I Must Warn Against Placing ANY Food by a Waterfowl – SWAN’s Nest.
Nesting Swans Who Eats Who

I Thought this would Not be a Large Topic Page..
Then as I Collected Notes and Learned about
” WHO EATs WHO ? “ This Page Grew..
Nesting Swans WHO Eats WHO

We have All Experienced a Chain of Events that Ended Badly.

I am NOT going to be Able to Include EVERY Possible
Combination of the Chains of Natural Food Webs..
I think you will get the Idea from what I am Including..

I Hope you will Think about this to Protect your Swans.
IF ALL this Helps SAVE just ONE Swan..
It will be Worth the Time it Took me to Organize this Page.

Rob and I had the Opportunity to Visit with Several Feral-Wild
Mute Swans Living along our Local River System..
Nesting Swans Who Eats Who

We Visited these Swans and their Nest Areas Several Days a Week
over Several Years. It was a Magical Time.

Nesting Swans Who Eats Who

Lots of Photos.. Lots of HeartBreak. Learned a LOT.
Nesting Swans Who Eats Who
We Learned Wild Swans will not “Nest” where they Live…
and they do not Live where they “Nest.”
Nesting Swans

Generally they would Go a Half Mile or so Away…
Picking a Location AWAY from Humans..
Away from the Food Treats and Support.
This is in Early Spring. There is Little Natural Foods.
The Swans KNEW what they Needed..
Nesting Swans

Before these Pens Start to “Sit,” while they are Laying their Clutch of Eggs..
they will be EATING.. Lots of Eating.
Nesting Swans Who Eats Who

She is Digging in Soft Mud for Insect Larva..
Nesting Swans Who Eats Who
But, Once the Pens are ON their EGGs “Incubating,” it is Close to Fasting Time.
Nesting Swans

As Ground Nesting Birds, Swans are VERY Vulnerable…
The Cob and/or Pen may be able to BEAT off a Predator..
but, they may Develop Fatal Infections if Bitten or Scratched..
Nesting Swans Who Eats Who

The Pens are the most Likely to be Killed while Nesting.
Many Pens will “SIT” on their Eggs as they are Being Attacked.

Swans and Most Waterfowl are Prey..
They become Food for Meat Eating Birds, Mammals, Reptiles..
Nesting Swans Who Eats Who

Putting Food Near the Nest is Risky.. It Invited Predators.
Swans are So Messy when they Eat that Some Feed Gets Dropped on the Ground..
Wet Feed Smells like Dog Food..

Most Swan Nests are Near Water..
Dampness will Aid in the Breakdown of Foods..
Dampness is a Great Environment for Mosquitoes..
Which can Carry Viruses: West Nile, Viral Encephalitis, Zika Fever.
Nesting Swans Who Eats Who

We had a Tiny Cygnet that had Encephalitis..
It Damage Areas in her Brain.. She behaved more like a Lizard..
We had to make a Hard and Sad Decision for her.
Nesting Swans Mute Swan Cygnet Encephalitis

Eastern Equine Encephalitis Virus is a Mosquito-borne Alphavirus,
It Cycles between Mosquitoes and Birds in Freshwater Swampy Areas.

Your Cob will Still be Eating – Patrolling and Guarding.
Place his Feed Container Away from the Nest Area..
Nesting Swans Who Eats Who

Keep ALL Feed/Food at Least 30-40 Feet from the Nest.

Nesting Swans Who Eats Who

A Pan of Clean (Change Daily) Cold Water on Hot Days
Placed several Feet from the Nest is often “Welcomed” by the Pens.
Nesting Swans Who Eats Who

Nature Evolved the Mute Swan Pens to Barely Eat During Nesting.
Nature WANTs these Pens to be HUNGRY when the Cygnets Hatch..
SO, the Dam will Take her Cygnets to Feast
on Tiny Water Bugs and Critters and Plant Materials
that she will Stir up as she is Finally EATING again..
Nesting Swans

After 35 Days of Incubating her Developing Eggs..
the Cygnets will Start to Wiggle and Peep..
This Signals the Pen.. and her Hunger Returns.
Nesting Swans Who Eats Who

The Pen’s Sudden Hunger is a “Symptom” of Imminent Nest Maturity.
Usually One to Two Days before the First Cygnet Hatches…
the Female will Spend Time OFF the Nest Eating EVERYTHING
she can find within a Short Distance of the Nest.  …Over 30 Feet Away.Nesting Swans Who Eats WhoTheir Cygnets are Wiggling and “Piping.”  WE Could Hear them ! 
Nesting Swans Who Eats Who

The Clutch/Brood of Cygnets will Generally Hatch within 48 Hours..
Nesting Swans Who Eats Who
The Pen and Cob will Take their Healthy Cygnets to Areas
where there are LOTs of Insects.. A “Buggy Cafeteria..”
Nesting Swans Who Eats Who

The Cygnets must go to the Water by their Third Day to Start EATING.
“BUGS are the GRUB” for their First 10 Days… LOTS and LOTS of Bugs.
Nesting Swans Who Eats Who

This is Nature’s Plan..
Your Role is to Provide a GOOD Healthy Diet during the Winter Months..
so you Pen is Healthy going into her Nesting Weeks..
Nesting Swans Who Eats Who

Keeping Food AWAY from the Nest Area..
is NOT Going to Completely Prevent all the Hazards to the Nest..
But, Why Invite Trouble. ??

Just a Little Protein Based Feed or Starchy Corn/Wheat
can Result in a Chain Reaction of Unwanted Pests > Predators..

Dropped Feed will Invite a Wide Range of Unwanted Creatures..

The Spoiled-Decomposing Food Droppings will be Replaced by
Nesting Swans Who Eats Who

BACTERIA:  There are Thousands of Environmental Bacteria.
…..A Fair Number of these Cause Serious Diseases.
…..Staph and Coliform Infections are Common and a Challenge to Treat.
Nesting Swans Who Eats Who

…..There are Millions of Animals who EAT Bacteria as Part of their Diet.
…..BACTERIA are Very Good at Absorbing Mineral Nutrients from the Environment.
…..BACTERIA are at the Bottom of most Food Chains on Earth.
…..BACTERIA Attract a Wide Variety of Critters.
Nesting Swans Who Eats Who

MOLDs:  Old Food Sours, Smells and Rots..
Nesting Swans Who Eats Who
…..The Smell of MOLD Attracts TERMITEs.
…..FUNGUS GNATs and MOLD MITEs are two Pests closely Associated with MOLDs.
…..COCKROACHEs, CRICKETs, SLUGs, and MILLIPEDs are Attracted to MOLDs.
…..These Critters will Attract SPIDERs..
Nesting Swans Who Eats Who

…..Environmental MOLDsNesting Swans Who Eats Who Mildew
YEASTs:  Yeast is Single-Celled Organism that belongs to the Fungal Ecosystem.
…..There are more than 500 Species and Thousands of varieties of Yeast
…..that can be found in the Soil, Sugary Liquids (in the fruit and flowers)
…..and on the Surface of Plants and Animals.
…..Some YEASTs are Mild to Dangerous Pathogens.
…..Especially Candida albicans, Histoplasma, and Blastomyces.

FUNGUS:  Fungus, ( plural Fungi ), any of about 144,000 known Species
…..of Organisms which includes the YEASTs, RUSTs, SMUTs, MILDEWs,
Nesting Swans Who Eats Who

….. CANDIDIASIS – PNEUMONIA – Breathing them in has WORSE Effects
…..than Eating them – Causing Respiratory Symptoms & Diseases..
…..ASPERGILLOSIS – The Young Swan below had Lungs Filled with this Mold.
…..  He did not Survive.Nesting Swans Who Eats Who Aspergilloisis******
Nesting Swans Who Eats Who

…..BIRDs, TURTLEs, and many Species of INSECTs.
Nesting Swans Who Eats Who
…..Over Time we got to See a Wide Variety of Mushrooms and Tree Fungus.

Nesting Swans Who Eats Who

PARASITEs:  PROTOZOANss, AMOEBAE and Microscopic Crustaceans,
…..They are the Biggest Consumers of Bacteria.
…..NEMATODEs ( Worms ) GASTROPODs ( Snails, Slugs )
…..and Insects like ANTs, GNAT & FLY MAGGOTs, TERMITEs..
Nesting Swans Who Eats Who

…..SLUGs, SNAILs.  All these Tiny Creatures have Body Waste that Spread Diseases.

Nesting Swans Who Eats Who Tape Worm Life Cycle

Nesting Swans Who Eats Who Round Worm Life Cycle
is a Protozoan Parasite Common on Farms.
…..In Poultry, affects their Intestines Reducing a Birds Ability to Digest
…..and Absorb Nutrients. Diarrhea, Weakness to Death.
…..The Disease is Transmitted by the Fecal Waste of Insects and Wild Birds.
Nesting Swans Who Eats Who

AMOEBAE:  are Microscopic Free-Living in Fresh Water,
…..They are Commonly found in Pond Water, Ditches, and Lakes.
Nesting Swans Who Eats Who
…..Amoebiasis or Amoebic Dysentery can have Mild or Severe Symptoms:
…..Loss of Weight, Colonic Ulcerations, Abdominal Pain, Diarrhea or Bloody Diarrhea.
…..Anemia may develop due to Prolonged Gastric Bleeding.
Nesting Swans Who Eats Who

SPIDERs:  Black Widow Spiders are Native to Pennsylvania
…..are generally found Outdoors.  Insects Attract SPIDERs.
Nesting Swans Who Eats Who*******We See these Spiders ALL the Time. 
They do have a Job Eating Insects.
Nesting Swans Who Eats Who
INSECTs:  There are MANY Insects that have a Larve-Maggot Stage.
Nesting Swans Who Eats Who

Nesting Swans Who Eats Who

GRUBs and MITEs:  will Consume some Bacteria.


FLIEs Around a Swan Nest are a SIGN of Trouble.
…..Remove any Cracked, Spoiled or Foul Smelling Eggs.
Nesting Swans Who Eats Who
…..FLIEs Carry Many Types of Diseases.
Nesting Swans Who Eats Who

FLIEs:  are One of the largest Insect Orders.
…..It Numbers more than 120,000 Species World Wide.
…..There about 18,000 Species found in North America.
Nesting Swans Who Eats Who
FLIEs are a Common Insect Pest on the Average Farm.
…..Where there is Animal Waste in Fields and Pastures.. and Decaying Compost Piles.

…..A Female HOUSE FLY can lay up to 600 Eggs in her Short Lifetime.
Nesting Swans Who Eats Who

…..Most FLIEs Lives an Average of 15 to 25 Days.
….HORSE FLIEs are Common on Farms..


At the End of this Topic Page..
There is a Section on the BLOW FLIES.

ADULT FLIEs Feed and Deposit their Larvae-Maggots on Organic Decaying Material.
…..This includes, Fruit, Vegetables, Meat, Animal and Human Feces.

FLIEs.. FLIEs are a REAL CONCERN Near a Nest..
…..I Read an Article Years Ago… A Mute Swan Necropsy Report.
…..A FLY or FLIEs had Lay their Eggs on the Pen’s Cloaca.
…..It is Warm Moist Tissue..
…..The MAGGOTs Went Up into the Pen’s Cloaca and were Feeding on her Vagina..
…..She DIED from the Bleeding and Infections..
…..This was a Horrifying Image.. Imagine her Suffering.

…..Eating MAGGOTs or Maggot-infested Food can cause BACTERIAL Poisoning.
…..Most Foods that have MAGGOTs are NOT Safe to Eat,
…..Especially if the LARVAE-MAGGOTs have been in Contact with Feces.
….HOUSE FLIEs and HORSE FLIEs use Animal and Human Feces as Breeding Sites.
Horse Fly Nesting Swans Who Eats Who

FOXEs, RACCOONs, POSSUMs, BIRDs all eat MAGGOTs when they get the chance.
ANTs.. Sting and Bite.. can Kill Tiny Cygnets..
Nesting Swans Who Eats Who

INSECTs will be Attracted to the Cygnets’ Eyes.
…..Various INSECTs will Sting the Wet Cygnets. ( Ants )
….Some will Eat their Eyes.. Any Part that is Moist.

…..When the Cygnets are Still Wet with Egg White
…..and there is a Little Blood in the Shell they are Especially Vulnerable.

Nesting Swans Who Eats Who

Then there are BEEs, CARPENTER BEEs, HORNETs,
Nesting Swans Who Eats Who

…..These Stinging Insect are Attracted to Sweet Food Waste.
Nesting Swans Who Eats Who

Both WASPs and YELLOW JACKETs are Beneficial INSECTs in Nature.
…..They help Control the Populations of many other INSECTs and SPIDERs.
Nesting Swans Who Eats Who

Nesting Swans Who Eats Who

******* Any Pond or Lake Environment has a Complex Network of Creatures..  
Nesting Swans Who Eats Who
…..and PURPLE MARTINs are Helpful – their Diet is Mostly INSECTs..
Nesting Swans Who Eats Who

…..will Attract.. MICE, VOLEs, MOLEs, SHREWs, CHIPMUNKs, RATs..
Nesting Swans Who Eats Who

….FROG and TOADs are Beneficial… They Eats LOTs of Insects..
Nesting Swans Who Eats WhoNesting Swans Who Eats Who
and RATs have been Reported to Eat Hatchlings and/or their Faces.
…..Especially when they First Hatch..  They will Drag the Cygnets Out of the Nest.
Nesting Swans Who Eats Who

MICE and RATs that are Near a Swan Nest will Attract FOXEs, SNAKEs, etc..
…..In the Spring FOXEs  –  and most Predators are Feeding their Young.
Nesting Swans Who Eats Who
Most Water Environments have WATER SNAKEs..
Nesting Swans Who Eats Who

And SNAPPING TURTLEs..  You will Need to Check Annually for these Harmful Turtles. 
Nesting Swans Who Eats Who Snapping Turtle

SNAPPING TURTLEs:  ( Try to Remove Them.)
…..They will Hang Around Areas where there is Spilled Feed/Food.
…..Tiny Cygnets are an Easy Meal for SNAPPING TURTLEs.
Nesting Swans Who Eats Who Snapping Turtle

SNAKEs:  Common US Snakes
…..Depending on WHERE you Live..
Nesting Swans Who Eats Who

SNAKEs will be Attracted to the MICE, VOLEs, MOLEs or RATs..
…..and the SNAKEs will Grab the Tiny Cygnets as they Waddle to the Pond..
Nesting Swans Who Eats Who***************
Nesting Swans Who Eats Who…..Cygnets are taken Back and Forth to the Nest for Several Days.  
Nesting Swans Who Eats Who

…..The Adult Swans will Check for any Danger before Bringing the Cygnets Back to the Nest. Nesting Swans Who Eats Who
…..This Sire below Stood and Watched their Nest for Over 30 Minutes.
…..There was Something in the Nest that he was Alert to.
…..Their Cygnet was Kept Out of the Nest. Nesting Swans Who Eats Who
…..The Swans Never Took their Cygnet to this Nest Again..
…..The Nest was “Closed” the Next Morning.
MICE and RATs have been Reported to Eat the Cygnets
…..as they are Trying to Hatch Out of their Shell.
Nesting Swans Who Eats Who
….CHIPMUNKs will all Attract SNAKEs to Live Near Water
Nesting Swans Who Eats Who

These FURRY CREATUREs:  Will Attract OWLs, CROWs,
Nesting Swans Who Eats Who

FURRY ANIMALs:  Commonly spread TICKs, VIRUSEs and PARASITEs.
….TICKs are Seeking WARM Blooded Animals or Birds to have a Blood Meal..

Nesting Swans Who Eats Who
….TICKs can Carry Serious Diseases-Viruses > > Lymes Disease, West Nile, Babesiosis,
…..Powassan, Tularemia, Viral Encephalitis.

…..Diseases Transmitted by Ticks.
…..https://www.cdc.gov/ticks/diseases/index.html  ( You will Need to Copy and Paste. )
FLEAS, TICKs and other PARASITEs:  are commonly Spread
…..by FOXEs to Domestic Pets – Cats and Dogs.
Nesting Swans Who Eats Who

…..These may Snatch Small Ducklings, Goslings and Cygnets.
Nesting Swans Who Eats Who

SKUNKs:  SKUNKs prefer Meat, will Eat Plants and Vegetation.
…..INSECTs, Small ANIMALs, BIRDs, EGGs, POULTRY, WORMs, Berries,
…..GRUBs, BEETLEs, CRICKETs and GRASSHOPPERs – Foods with a Strong Odor.
Nesting Swans Who Eats Who
OPOSSUM – POSSUMs:  Eat a Large Number of TICKs..
…..Ranging from Fruits, Grasses, INSECTs, SLUGs, SNAILs, MICE,
…..RATs, MOLEs, FISH and even CARRION.
Nesting Swans Who Eats Who

…..POSSUMs are not totally Immune to Rabies, they Rarely Carry it.
…..As a Marsupial, Possums have a lower Body Temperature than most other Mammals,
…..so their Bodies do not provide a suitable Environment for the Rabies Virus.

RACCOONs:  Raccoons Carry and Spread a Number of Dangerous Diseases..
Nesting Swans Who Eats Who
…..PARASITEs:  Deadly Ones.. Try NOT to Attract them. They may have Rabies.
…..RACCOON Roundworm – Baylisascaris found in the Pest’s Feces.

…..LEPTOSPIROSIS: A Bacteria spread via Excrement
……which causes Fever, Headache, Chills, Muscle Aches,
……Jaundice, and potentially even Kidney or Liver Failure.

…..GIARDIASIS: Gastrointestinal PARASITE Ailment
……that induces Bloating, Vomiting, Indigestion, and loss of Appetite.

…..SALMONELLOSIS: A BACTERIA when Ingested causes Abdominal Pain and Diarrhea.

…..YOU Do not want RACCOONs Pooping Near the Swan Nests.

RACCOONs are the Common Swan Egg Thief..
…..They will Attack and Kill Swans.. Typically only Removing the Head.
Nesting Swans Who Eats Who

….Finding Broken Eggs near the Nest or in the Water Nearby is Disheartening.
Raccoon Nesting Swans Who Eats Who …..I Wonder what our Pen is thinking when she Sees a Raccoon Eating her Eggs. Raccoon Nesting Swans Who Eats Who
From Raising Chickens

…..What kind of Animal Bites the Heads off Poultry and leaves the Rest.

RACCOONs and WEASELs:  will do this, they are after the Brain.
…..The Brain has the Best Nutrients and Fats for getting Winterized.

RACCOONs and WEASELs:  are known for Killing Everything they can Catch.
…..They are Responsible for Frenzied Killing in Chicken Coops.
…..They can not eat it all and they can not carry it all away.
…..So they go for the choice Pieces – The Heads.
Nesting Swans Who Eats Who

…..Personally, I Like having the Swans’ Feed in a Bucket
…..and Take this Food Inside at SunSet.Nesting Swans Who Eats Who

CATs, FOXEs, CANINEs and BIRDs of Prey:  will Generally
…..only take One Bird or Mammal at a Time, Leave to Eat Elsewhere.
…..They will Likely come Back for another Easy Meal.
…..But they Generally do NOT Slaughter and only Eat the Head.
….FOXEs have been known to Carry Rabies.
Nesting Swans Who Eats Who

WEASELs: are Carnivores and will Eat almost All Animals they find.
Nesting Swans Who Eats Who
HAWKs and OWLs:  Sit up in Trees and Watch for Small Fuzzy Things to be LUNCH !
Nesting Swans Who Eats WhoHAWKs and OWLs:  Are Feeding their Young in the Spring.

Nesting Swans Who Eats Who
MINK:  Their Dens are usually near Water, they are mostly Carnivorous.
Nesting Swans Who Eats Who

MINK are Agile and Fierce Fighters, Killing Prey
…..with a Hard Bite to the Back of the Skull.

Nesting Swans Who Eats Who

The BOBCATs is the most abundant Wildcat in North America.
Nesting Swans Who Eats Who Bobcat
…..A Carnivore, they feeds on RODENTs, RABBITs, LIZARDs,
….SNAKEs and some BIRDs And CARRION.

BOBCAT KITTENs are being Feed in Early Spring.
…..The BOBCAT is an incredibly Elusive Predator that Silently Stalks
…..in the Dark before Pouncing with Incredible Force.
…..They are seen as Pest for Farmers Preying on LIVESTOCK and POULTRY.
…..I have had Several Sad Calls about Swans/Cygnets being Killed by BOBCATs.

…..Predators of the BOBCAT include MOUNTAIN LIONs,
Nesting Swans Who Eats Who Mountain Lion

Depending on your Location BEARs.
…..Swan Can Not Defend themselves from a Bear Attack.
Nesting Swans Who Eats Who

BEARs can Smell Foods from Long Distances.
Nesting Swans Who Eats Who

In 2020, While talking about Common Swan Predators with a Man
who lives in a Rural Area of Pennsylvania. I mentioned the Problem of Raccoons
Stealing Swan Eggs even on Isolated Islands.

EGGs are Great Nutrition for the Female Raccoon with Spring Kits..
Raccoons can be Nasty.. Fighting for the Eggs..
Nesting Swans Who Eats Who

He Said, Over the Years Fur Trapping has Declined due to Campaigns
by Animal Rights Groups.
More and More People are Refusing to Use or Wear Fur from Animal Pelts.

The Decreased Market for Animal Pelts has a Side Effect..
Large Animal Predators are an Increasing Problem for  Farmers and Folks
living in the Wide Open Spaces..

Our Discussion was mainly about Raccoons.. How their Numbers have increased
in some Areas of Farming.. The Raccoons are Destroying Corn Crops.
They Pull the Developing Ear down and Munch on the Corn..
Knowing that Raccoons Carry many Serious Diseases, some in
their Saliva and some in the Body Waste.. It is Consequence of
Saving these Large Nocturnal Rodents.. Cute as they are to See..
Nesting Swans Who Eats Who

I am not Suggesting that Trapping is OK..
But, I do not want the Predators Harming our Swans..
We Pinion Swans to keep them Safe from the Perils of Flying..
then make them more Vulnerable to being Harmed or Killed
because they can not Flee from Dangerous Animals.      >> A Real Moral Dilemma..
Nesting Swans Who Eats Who

For Help with the Larger Predators .. FOXEs, RACCOONs, COYOTEs, etc.
You might get Help by Contacting:
WildLife Control Services or Your State’s Trapping Association.
Nesting Swans Who Eats Who


Mute Swan Pens Evolved to NOT Eat during Nesting..
KEEP Foods Away from the Nest.. !!!
She will Eat if she want to go to the Feed Container..

WATER.. is OK.. This will Help the Pen Flush her Gizzard..
Hopefully Reduce the Infections that might Develop in their Gizzards.Nesting Swans Who Eats Who

Female Swans barely Eat while they are Incubating their Eggs.
Mother Nature wants her to be VERY Hungry when the Cygnets Hatch..
Have some Feed Mixture where she can Find it..
Take the Feed in at SunSet.. Out in the Morning..
Away from the Nest.. She will be OK.. Nature has a Plan..

It is Safest to Keep all Foods at Least 30 Feet or More from the Nest.

The Cygnets will only Weigh about 8-10 Ounces when they Hatch…
they may be Prefect Meals for Snakes Living Close to the Nest.
Nesting Swans Who Eats Who

Even with the Nesting Platform.. Once there are EGGs..
STOP Placing ANY Food on the Platform.

The Swan Pen will need to Leave the Nest if she Needs to Poop..
Nesting Swans Who Eats Who

Adult Swans do not Poop in their Nests.. ( or Seldom )
The Nest Cavity is Kept Clean for the Cygnets.
YOU Do Not want a Swan to Poop near the Nest.
Swan Poop has a Very Distinct Smell and will Attack Predators..

A Good Swan Nest has NO Poop in it..

Nesting Swans Who Eats Who


Nesting Swans Who Eats Who Blow Flies

There are approximately 80 species in North America.
In the Fly Order, Diptera, they are Metallic Blue, Green, or Black in Color
…..and are Noisy in Flight.  They are Slightly Larger than Houseflies.
…..They are found with Animal Carcasses, Animal Feces, Garbage Piles,
…..and Piles of Decaying Vegetation > Decaying Compost Piles.

BLOW FLY LARVA are a Problem for all Cavity Nesting Birds.
BLOW FLY Biology varies among the Species and with Environmental Conditions
…..so the following information is General.

BLOW FLIEs Seek Areas that provide a Layer of Loose, Damp Soil and Litter
…..where their Larvae may Thrive and Pupate.

…..Each Female BLOW FLY Deposits Thousands of Eggs over her 2 to 8 Week Life Span.
…..Egg Masses may consist of 1500 to 2,000 Eggs. The Larger Egg Masses are usually
…..the result of Several Females Depositing Eggs on the Same Location.
MAGGOTs Hatch in LESS than 24 Hours when Conditions are Warm and Humid.
BLOWFLY LIFECYCLE Nesting Swans   Who Eats Who

MAGGOTs Feed at Night, Moving Down into the Nesting Material during Day Hours.

This Adaptation has Evolved over many Centuries of a Close Association
…..of BLOW FLIEs with Cavity Nesting Birds.  The LARVAE-MAGGOTs
…..Avoids being Eaten by the Adult Bird during the Day, and Feeds only after Dark,
…..when the Helpless Nestlings are Easy Prey.

…..Blood is usually Sucked from the Feet or Legs, often from between the Toes.

…..Depending on the Temperature MAGGOTs Complete Development in 4 Days.

…..At the End of this Period, MAGGOTs Typically Burrow in the Nesting Material
…..and Pupate for 5 to 7 Days then the Adult Flies Emerge.

…..A Week Later, Females begin to Deposit Eggs and the Life Cycle is Repeated.
….BLOW FLIEs Generally Develop from Egg to Adult in 10 to 25 days,
…..they can have 4 to 8 Generations a Year.


FLYS-X is a Natural Organic Spray – Repellent.  
…..Take Care to Avoid Spraying on the Swans..
Nesting Swans Who Eats Who


ABSORBINE FLYS-X Natural Fly Repellent
…..Ready-to-Use For Multi-Species Live Stock Use.
…..Repels & Controls BITING FLIEs, MOSQUITOEs, GNATs and TICKs.
…..Natural Ingredients:   Use ORGANICs – ONLY if Needed..
…..Rosemary Oil, Thyme Oil, Citronella Oil,
…..Cedar Oil, Clove Oil, Lemongrass Oil, Geraniol.

DO NOT SPRAY Directly into the Nest..
…..Spray 4-5 Feet OUT from the Center of the Nest..
…..Spray Away from the Pen.. On Calm Day.


…..IS an Organic Crawling Insect Killer.
Nesting Swans Who Eats Who

With all the Concerns about Pesticides DIATOMACEOUS EARTH
is Safe & Effective. It is NOT a Poison.
DE is Finely Ground Fossils of Prehistoric Fresh Water Diatoms.

Apply the Dust Lightly in Infested Nest Areas.
DE Kills Common Household and Garden Pests:

DE is a Long Lasting Control -Sprinkles easily into Cracks and Crevices
where Insects Hide and Eradicate them. When Soft-Bodied Insects come in Contact
with this Fine Powder-Dust, DE causes Massive Loss of Body Fluids and Death.

When the Dust is Eaten by Insects, the DE Inhibits Breathing, Digestion and
Reproduction of Insects and their LARVAE-MAGGOTs.
Find this Product in most Lawn and Garden Departments.

TIP: Use a Plastic Mustard (pull up cap) Bottle to Squeeze
a Small Amount of the DE Dust into the Middle of a Nest.

I have Gathered Information from Many Sources.
I have Used Images and Charts from Searches OnLine..
I have Added Credit to All these Files.
I GREATLY Appreciate those who Created them.
I Hope they will be OK with their Use here.
My Goal is to Save the Lives of the Swans we Care for.
Nesting Swans Who Eats Who
Organized APRIL 2022 …. PA Swan Lover Linda M.Sweger
Nesting Swans Who Eats Who

Swans do not have an Easy Time While Nesting.
Nesting Swans Who Eats Who