Pileated Woodpecker Research Articles

Unusual Attack of Intruding Male on a Nesting Pair of Pileated Woodpeckers

S. platycercus probably does not qualify as a recent addition to the bird fauna of the Chiricahuas since it ranges from Central America to southern Montana (Bent 1940). Though Eugenes fulgens and Lampornis clemenciae are too large to fit the conditions of the schema, the ranges of both reach their northernmost extension in southern Arizona (Marshall 1957), illustrating how, under the right bird-flower conditions, range extension alone might serve as the initial impetus as indicated in the schema. The schema would also apply to situations in which bees, birds, and their respective flowers were already present if, instead of or in addition to range extension, environmental changes occur. For example, Cruden (1972) suggests that increased daily periods of inclement weather, which substantially decrease bee activity but have little affect on feeding activity by hummingbirds, increase hummingbird pollination relative to bee pollination. The research on which this paper is based was made possible by an Alfred P. Sloan Grant to Cornell College and National Science Foundation Grant GY84386. Special thanks are due to Robert Cruden for reading the manuscript and offering helpful suggestions.

The Hypopi (Acarina: Sarcoptiformes: Hypoderidae) from the subcutaneous tissues of birds in Louisiana.

Hypopial nymphs of mites of the family Hypoderidae were recovered from the subcutaneous tissues of 10 species of birds in Louisiana. New host records are established for Hypodectes (Hypodectoides) propus bubulci from Leucophoyx thula and Dichromonassa rufescens and Hypodectes (Hypodectes) nycticoracis from Ixobrychus exilis and Florida caerulea. Additional host records for the above are the former species from Ardea herodius herodius, Bubulcus ibis, and Florida caerulea and the latter from Nycticorax nycticorax. Also, Neottialges (Pelecanectes) eudocimae and Phalacrodectes whartoni from Eudocimus albus, Neottialges (Petecanectes) evansi from Phalacrocorax auritus, and Toucanectes dryocopi from Dryocopus pileatus were collected. Hypodectes (Hypodectoides) propus similimus Ĉerný, 1969 is considered to be a synonym of H. (H.) propus bubulci Fain, 1967 and Alcedinectes alcyon is proposed as a new combination for Gabucinia alcyon Boyd, 1967. The affinities of these species, host-parasite relationships, and certain aspects of the biology of these mites are discussed.

Pileated Woodpeckers Near Drumheller, Alberta

Pileated Woodpeckers Near Drumheller, Alberta

Toucanectes dryocopi sp. n. (Acarina: Hypoderidae) from the Pileated Woodpecker, Dryocopus pileatus L.

Toucanectes dryocopi sp. n. is described from the subcutaneous tissues of the pileated woodpecker, Dryocopus pileatus. The new species differs from the only other known species of the genus, T. ramphastos, by its larger size, the presence of a sejugal furrow, greater sclerotization of the cuticle, and a reduction in the number of idiosomal setae. Three specimens of the pileated woodpecker, Dryocopus pileatus, collected near New Orleans, Louisiana, were found infected with hypopial nymphs of mites of the family Hypoderidae. These are described herein as a new species of the genus Toucanectes. In the following description all measurements are in microns unless otherwise indicated. Drawings were made with the aid of a camera

Studies on Avian Predators of Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae) With Special Reference to Picidae

AbstractFour species of woodpeckers (family Picidae) are definitely known to be predaceous on the western pine beetle in the Central Sierra Nevada Mountains in California. These are: Dendrocopus villosus, Dendrocopus pubescens, Dendrocopus albolarvatus and Dryocopus pileatus. The red-shafter flicker (Colaptes cafer, Picidae), creepers (Certhiidae), nuthatches (Sittidae), and flycatchers (Tyrannidae) are thought to be predators on the western pine beetle.Predation by woodpeckers reduced the western pine beetle population by (a) actual consumption of 31.8% in two generations studied, and (b) by increasing parasite densities in the order of 3.85 factor. The increase in parasite density was believed to have been caused by bark removal to a near uniform thickness enabling a higher parasitism by those parasites with short ovipositors, such as Cecidostiba and Roptrocerus spp.One adverse effect of woodpecker predation was a reduction or a depression of insect predation. Highly mobile insect predators may have been driven away by woodpecker activity, actually consumed, or both.Bark flakes, chipped or pried off by the woodpeckers during their feeding activity, contained but few insects and it is doubtful that these could survive on the ground and reach the adult stage.

Behavior and Methods of Communication of Pileated Woodpeckers

Behavior and Methods of Communication of Pileated Woodpeckers

The Ecology of the Pileated Woodpecker

The Ecology of the Pileated Woodpecker

Pileated Woodpecker

Pileated Woodpecker

Preliminary Notes on the Development of Nestling Pileated Woodpeckers

Preliminary Notes on the Development of Nestling Pileated Woodpeckers

Northern Pileated Woodpecker Eating Salmon

Northern Pileated Woodpecker Eating Salmon

Actions of the Northern Pileated Woodpecker

Actions of the Northern Pileated Woodpecker

Northern Pileated Woodpecker, Cummington, Mass

Northern Pileated Woodpecker, Cummington, Mass

Northern Pileated Woodpecker in Clayton Co., Iowa

Northern Pileated Woodpecker in Clayton Co., Iowa

Notes on the Nesting Habits of the Northern Pileated Woodpecker

Notes on the Nesting Habits of the Northern Pileated Woodpecker

Pileated Woodpecker in the Helderberg Mts., N. Y.

Pileated Woodpecker in the Helderberg Mts., N. Y.

Pileated Woodpecker in Connecticut and New Jersey

Pileated Woodpecker in Connecticut and New Jersey

Nesting of the Northern Pileated Woodpecker

Nesting of the Northern Pileated Woodpecker

Pileated Woodpecker near Litchfield, Conn.

Pileated Woodpecker near Litchfield, Conn.

The Pileated Woodpecker in Anne Arundel County, Md.

The Pileated Woodpecker in Anne Arundel County, Md.

The Pileated Woodpecker (Ceophlœus pileatus) in Minnesota

The Pileated Woodpecker (Ceophlœus pileatus) in Minnesota