ohio’s woodpeckers...2013/11/20 · – the life of a woodpecker – ohio’s woodpeckers –...
TRANSCRIPT
-
Marne Titchenell Wildlife Program Specialist
School of Environment and Natural Resources
OHIO’S WOODPECKERS: FLICKERS, SAPSUCKERS, DOWNIES, AND MORE!
Ohio State University Extension
-
What Will We Talk About: – Amazing abilities of
woodpeckers
– Woodpecker Habitat
– The Life of a Woodpecker
– Ohio’s Woodpeckers
– Attracting Woodpeckers
-
The Woodpeckers: Nature’s Power Tools
– Highly specialized group of birds
• Nature’s power tools
• Carpenters of the bird world
• Specialize in cavity excavation
• Insect excavators
-
The Woodpecker Family
– Picidae • Piculets (2) • Wrynecks
‐ Genus Jynx • Picids
‐ Woodpeckers ‐ Sapsuckers
– US woodpeckers are picids • 22 species • 7 in Ohio
-
Diversity of Family Picidae
Smallest & Largest ‐ Worldwide Smallest & Largest – United States
Bar‐breasted Piculet
Imperial Woodpecker
Pileated Woodpecker
Downy Woodpecker
-
The Ivory‐Billed Woodpecker Story
– Largest woodpecker north of Mexico
– Was found in mature forests in southeast US
– Believed to be extinct since mid‐1900’s
– Rediscovered in Arkansas, 2005
– Controversy over rediscover, still no agreement
-
The Woodpeckers: Very Specialized Family
– Avoiding brain damage
– Specialized beak
– Long tongue with modified tip
– Protected nostrils and eyes
– Short legs and strong toes
– Stiff tail feathers
– Protective coloring
– Large ribs for extra muscle attachment
-
The Woodpecker: World’s Best Shock Absorber
Strength and speed of impact:
• 100 times per minute • Speeds of 12‐15 mph • Force of 600‐1500 G’s • Decelerating after 1200 G’s =
coming to compete stop from 26,000 mph
– Human left with concussion after 100 G’s
– How do woodpeckers avoid brain damage on a daily basis??
-
The Woodpecker: World’s Best Shock Absorber
– Frontal bone in skull • Helps keep upper bill in place
– Cartilage for cushion • Extra between bill and skull to
absorb shock ‐ Protractor muscle
– Perfect aim • Each blow delivered straight on
(perfect right angle)
– Tiny padded brain • Brain lacks the mass to develop
enough inertia to cause damage • Brain placement in skull and 90
degree angle attack ‐ Shock wave travels below brain
-
A Little Extra Muscle Never Hurts
– Wider neck ribs for more muscle attachment
• More muscle to absorb shock and constantly drill, peck, hack, and whack!
-
That’s One Weird Looking Tongue!
– Tongue bone • Hyoid apparatus
‐ Long slender, flexible bones
‐ Serve as attachment site for muscles
‐ Longer tongue = more muscles = more extension and strength
-
Why are Woodpecker Tongues so Special?
– It’s on the tip of the tongue…
• Sensitive • Sticky • Hairy • Barbed
-
Specialized Beak
– Shape – Length – Size – Self sharpening
• Bony inner structure covered with durable, leathery sheath (ramphotheca) ‐ Constantly growing
• Like fingernails ‐ Constantly sharpened by
everyday abrasion
-
Safety Glasses and Nose Protection
– Feathers to protect nostrils and filter air
– Eyes tightly fit in skull
• Prevents injury during pecking
– Blink to protect eye
• Also serves as “seat belt”
– Well positioned eyes
• Will see predators when tree directly in front of them
• See quite well and in color
-
Strong Feet and Tail Feathers
– Amazing feet
• Zygodactyl toes ‐ Two toes forwards ‐ Two toes backward
– Tail feathers
• 3rd leg of the tripod
• Center 2 feathers longest and strongest ‐ Pointed tips, reinforced
shaft, strong interlocking barbs
‐ Molted last
-
Protective Clothing
– Disruptive Coloration • Helps to conceal from
predators • Sharp contrast breaks up
and hides shape and outline
-
Meet Ohio’s Woodpeckers!
-
Woodpecker Habitat Needs
– Trees a requirement
• For nesting and feeding • Larger the woodpecker,
larger the tree needed ‐ Pileated woodpecker
– Exception to the rule: ‘
• Gila Woodpecker ‐ Resides in southwest
deserts and into Mexico
Saguaro Cactus
-
Woodpecker Habitat Needs
– Food • Insects main food
‐ Eggs, larvae, adults ‐ Ants and beetles
• One flicker stomach had over 3,000 ants in it!
‐ Moths and butterflies ‐ Caterpillars
‐ Spiders
-
Woodpecker Habitat Needs
– Food • Bird eggs and nestlings
‐ Red‐bellied woodpecker
• Fruit (berries)
Oooo, a plane!
-
Woodpecker Habitat Needs
– Food • Acorns, seeds, nuts
‐ A few species will cache nuts over winter • Red‐headed woodpecker
-
Woodpecker Habitat Needs
– Acorn Woodpecker • Drills acorn sized holes into
trees ‐ Granary – primary tree for
each family ‐ Up to 50,000 holes each with 1
acorn
-
Woodpecker Habitat Needs
– Food
• Sap ‐ Yellow‐bellied
sapsucker ‐ Feed at sapwells
• Small holes pecked in neat rows
‐ Sap is about 20‐30% of their diet
• Other wildlife benefits
• Tree usually heals
-
Woodpecker Habitat Needs
– Food
• Sap ‐ Yellow‐bellied
sapsucker ‐ Feed at sapwells
• Small holes pecked in neat rows
‐ Sap is about 20‐30% of their diet
• Other wildlife benefits
• Tree usually heals
-
Woodpecker Habitat Needs
– Migration • Yellow‐bellied sapsucker
‐ Stopover in Ohio to feed and rest
– Rest of Ohio woodpeckers remain year round
-
Woodpecker Communication
‐ Calls not songs ‐ Single note repeated over and
over ‐ Most woodpeckers have
variety of calls
‐ Used for communication ‐ Territoriality ‐ Mating ‐ Alarm
‐ Drumming ‐ Also form of communication ‐ Mainly during breeding season
-
Woodpecker Breeding Season
– Starts with males securing territories in early spring • Large the bird = larger the
territory ‐ Downy – ½‐1 acre ‐ Pileated – 1‐2 sq. miles
– Cavity excavation • Most create their own • Flickers will use existing cavity
– Tree selection • Decaying tree or live tree
‐ Live trees can work for larger woodpeckers
Are you about done with that cavity?
-
Woodpecker Cavity Excavation
– Male begins excavation • Cavity preparation pair
bonding • Male does most of the
work • Can take 1‐3 weeks
‐ Pileated – 3‐6 weeks
– Entrance hole as small as possible • Clue to woodpecker
species ‐ Downy – 1 ¼” circle ‐ Pileated – 3½ x 4” oval
-
Woodpecker Reproduction
– Color of bird eggs VIP • Camouflage
– Woodpeckers lay white eggs • No camouflage needed
– Most only one brood a year • Hairy – 6 eggs • Red‐headed – 10 eggs
– Both parents incubate, feed, and raise young • Both have brood patches
-
Hatching Time!
-
Ohio’s Woodpeckers
-
Pileated Woodpecker
–Largest Ohio woodpecker (and US)
–Habitat • Large tract of mature
woods • Large trees for roosting • Carpenter ants, wood‐
boring insects and other invertebrates, & mast
-
Pileated Woodpecker
– Fairly common across range
-
Northern Flicker
– Pic Flamboyant (French) • Large, brown noisy,
animated, uniquely patterned woodpecker
– Habitat • Woodlands, forest edges,
& open fields with scattered trees, as well as city parks and suburbs
• Ground‐loving – ant eater, also beetles and other inverts, and mast ‐ Pecks soil for ants
Red Shafted ‐ Western
Yellow Shafted – East & North
-
Northern Flicker
–Widespread and common throughout range
Red Shafted ‐ Western
Yellow Shafted – East & North
-
Red‐bellied Woodpecker
– Despite name, red belly rarely visible
– Habitat • Most forests, woodlands,
and wooded suburbs of the eastern United States
• Insects, spiders, and other arthropods, mast, and sometimes lizards and nestling birds ‐ Barbed tongue with sticky
saliva
– Populations increasing throughout most of range
-
Red‐headed Woodpecker
– Bold patterns earned nickname – “flying checker board” • Males and females identical
– Habitat • Woodlands with oak or
beech, groves of dead or dying trees, and open areas (burned, harvested)
• 1/3 insect and 2/3 mast ‐ Seeds, berries, nuts ‐ Successful aerial hawkers juvenile
-
Red‐headed Woodpecker
– Once common throughout range, now uncommon and local in many regions • Nomadic
-
Yellow‐bellied Sapsucker
–Ohio’s only migratory woodpecker • April‐May except NE Ohio
–Habitat • Young forests and edge
habitat, esp. forests regenerating from timber harvesting
• Sap is primary food, but also insects (ants and spiders)
-
Yellow‐bellied Sapsucker
– Widest range of 4 species of sapsuckers in US • Populations stable, but
require young forests
-
Hairy Woodpecker
– Larger of 2 look‐alikes of Ohio woodpeckers • Hairy – larger, longer bill
and body ‐ Bill roughly as long as head ‐ All white outer tail feathers
– Habitat • Mature woodlands with
medium to large trees ‐ Urban and rural areas
• 75% diet is insects • Readily visits suet feeders
Can I help you with
something?
-
Hairy Woodpecker
– One of most widespread of all NA woodpeckers
Can I help you with
something?
-
Downy Woodpecker
‐ Smallest woodpecker in Ohio and US • Bill roughly 1/3 size of head • Black spots on white outer
tail feathers
‐ Habitat • Open woodlands,
particularly deciduous woods and along streams ‐ Rural and urban areas
• Diet mainly insects • Readily visits suet feeders
-
Downy Woodpecker
– Numerous across range with stable population numbers
-
Attracting Woodpeckers
– Trees a requirement • Dead or dying trees
‐ In multiple stages of decay
– Size of woodlot • Small – Downie, Hairy, Red‐
bellied • Larger – Pileated
– Nest boxes where cavities and snags lacking • Flickers
– Feeders • Especially in winter!
– Bird baths
-
Nuisance Woodpeckers
– Problems:
• Damage to building • Usually between June – Feb.
– Management Options: ‘
• Woodpeckers are protected by law ‐ Can not physically harm them
• Scare tactics • Window decals, reflective
materials (CDs, mylar tape), loud noises
• Netting ‐ Excludes woodpeckers
• Tactile repellents ‐ Birds don’t like sticky feet
-
Woodpecker helping trees, too!
– Alphabet soup for dinner! • EAB and ALB
‐ Emerald Ash Borer and Asian Longhorned Beetle
-
Online Resources
–Cornell Lab of Ornithology – All About Birds • www.allaboutbirds.org
– Internet Center for Wildlife Damage Management • www.icwdm.org
–OSU Woodland Stewards • www.woodlandstewards.osu.edu
–Marne Titchenell • [email protected] • 614‐292‐0402
Questions?
Ohio’s Woodpeckers: Flickers, Sapsuckers, Downies, and More!What Will We Talk About:The Woodpeckers: Nature’s Power ToolsThe Woodpecker FamilyDiversity of Family PicidaeThe Ivory-Billed Woodpecker StoryThe Woodpeckers: Very Specialized FamilyThe Woodpecker: World’s Best Shock AbsorberThe Woodpecker: World’s Best Shock Absorber A Little Extra Muscle Never HurtsThat’s One Weird Looking Tongue!Why are Woodpecker Tongues so Special?Specialized BeakSafety Glasses and Nose ProtectionStrong Feet and Tail FeathersProtective ClothingMeet Ohio’s Woodpeckers!Woodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker Habitat NeedsWoodpecker CommunicationWoodpecker Breeding SeasonWoodpecker Cavity ExcavationWoodpecker ReproductionHatching Time!Ohio’s WoodpeckersPileated WoodpeckerPileated WoodpeckerNorthern FlickerNorthern FlickerRed-bellied WoodpeckerRed-headed WoodpeckerRed-headed WoodpeckerYellow-bellied SapsuckerYellow-bellied SapsuckerHairy WoodpeckerHairy WoodpeckerDowny WoodpeckerDowny WoodpeckerAttracting WoodpeckersNuisance WoodpeckersWoodpecker helping trees, too!Online Resources