author={Richard L. Abraham},
  journal={The Condor},
  • R. Abraham
  • Published 24 January 1974
  • Biology
  • The Condor
Qualitative descriptive information on both vocal and visual displays of waterfowl is abundant (e.g., Heinroth 1910, 1911; Lorenz 1953; Weidmann 1956; Johnsgard 1965; McKinney 1965a, 1969, 1970), and quantitative data are available for visual displays of a few species of ducks (e.g., Weidmann 1958; Weidmann and Daily 1971; Simmons and Weidmann 1973; Johnsgard 1960; McKinney 1961, 1965b; Dane et al. 1959; Dane and van der Kloot 1964; Field 1970). But quantitative data on vocal displays of adult… 

A ctivity patterns , vocalizations , and site selection in nesting Blue winged T eal

  • Environmental Science, Biology
  • 2012
The Blue-winged Teal Teal A nas discors breeds throughout the prairie pothole region of North America and may be dependent upon selection of a nest site that provides camouflage for the female and an optimal microclimate for developing eggs.

Biology and Conservation of the Laysan Duck (Anas laysanensis)

-A two-summer, mark-recapture study of Laysan Ducks (Anus laysanensis) resulted in a population estimate of 5 10 birds with over 90% of the birds marked. Individuals seemed long-lived with the low

Vocal recognition of a nest-predator in black grouse

Black grouse recognized raven calls and were alerted, displaying typical neck stretching, followed by head scanning, and eventual escape, and surprisingly, males tended to react faster and exhibited a longer duration of vigilance behavior compared to females.

Acoustic Differences between the Scoters Melanitta nigra nigra and m. n. americana

Scoter vocalizations may have a role in pair formation and pair bonding and support recent proposals to treat M. n.

Vocal repertoire, harmonic structure, and behavioural context in Red-throated Loon (Gavia stellata)

Although the majority of acoustical descriptions are limited to a single nesting pair where sexes could be differentiated, these represent the first quantification of sound frequency, harmonic structure, and duration, and are suggestive of syntactical content to the vocal repertoire of this basal taxon.

Acoustical comparison between decrescendo calls of female mallards and mimicry by humans using artificial duck calls

This study compared acoustic features of field recordings of the decrescendo calls of wild female mallards with those of duck callers and found that cocobolo, osage orange, pecan, acrylic, and bocote calls with double reeds produced notes acoustically most similar to female mallarddecrescendos.

Spacing and Three-bird Flights of mallards breeding in pothole habitat

Wild mallards (Anas platyrhynchos) were observed in pothole habitat near Minnedosa, Manitoba and territorial behaviour was most pronounced during a brief period from just prior to laying until early incubation.



A Preliminary Analysis of the Decrescendo Call in Female Mallards (Anas Pla Tyrhynchos L.)

The conditions necessary for the elicitation of this call were studied in captive, paired female Mallards, Anas platyrhynchos, in both outdoor and indoor pens andaired females gave significantly more calls when visually isolated from their mates than when their mates were present.

A Quantitative Study of Sexual Behavior of Mallards and Black Ducks

The results of this general study indicate that the Black Duck is much more closely related to the Mallard than is generally supposed and that the two forms should probably be considered to be only subspecifically distinct.

An Analysis of the Display of the Goldeneye Duck (b uCephala Clang Ula (L.))

A quantitative analysis of the sexual display of the Goldeneye duck revealed that individuals are more stereotyped in the performance of their actions than the population, and that individuals can sometimes be classed as "fast" or "slow" in their performance.

Three-bird flights in the Mallard

In North Kent, three-bird flights performed during the nesting season are not territorial in the Mallard or the Shoveler, and behaviour of paired drakes during Mallard flights indicates a polygamous tendency.

Observations on the incidence of following of visual and auditory stimuli in naive mallard ducklings (Anas platyrhynchos).

It is suggested that the departure of mallard ducklings from the nest often takes place at an age well past the critical period, and under these circumstances the long persistence of a high level of responsiveness to stimuli releasing the following reaction must have a high adaptive value, particularly in connection with the dangerous journey of the brood from the Nest to the nearerst water.

The Social Aspects of Reproductive Behavior in the Pintail

This study examines the reproductive cycle of the Pintail with particular emphasis on the motivation and function of aerial activity which can be observed throughout the nesting season.

Electrical Stimulation of Agonistic Behavior in the Mallard

Electrical stimulation of the brain of unanesthetized, freely moving adult Mallard ducks (Anas platyrhynchos) produced response patterns characteristic of the aggressive and escape behaviors of this species, suggesting that the different patterns of escape behaviors have different neuroanatomical distributions.

Observations on sound production in the Anatidae

A comparison of inter-species variations in the tracheal anatomy and acoustical characteristics of anatid vocalizations supports the contention that the trachea serves as a resonating tube, thus

The comfort movements of Anatidae.

Almost all comfort movements are of universal occurrence in basic situations in the family; the few specific variations represent adaptations to different ways of life, and are of very limited use as indicators of taxonomic relationships.

Tracheal Anatomy of the Anatidae and its taxonomic significance

Tracheal and syringeal variations in waterfowl are summarized, based on a tracheal collection representing 84 out of the 143 species of Anatidae, and specializations of the bronchi,tracheal tube, and musculature are frequent.