Synchronous Cardiac and Central Nervous System Diffuse Large B-Cell Lymphoma.

• Hematologic malignancies should be considered in the setting of a cardiac mass. • Degree of spread must be established as cardiac lymphoma is potentially curable. • Histopathology is the gold standard for a definitive diagnosis.

Vertical transmission of learned signatures in a wild parrot.

Learned birdsong is a widely used animal model for understanding the acquisition of human speech. Male songbirds often learn songs from adult males during sensitive periods early in life, and sing to attract mates and defend territories. In presumably all of the 350+ parrot species, individuals of both sexes commonly learn vocal signals throughout life to satisfy a wide variety of social functions.

Vocal matching by orange-fronted conures (Aratinga canicularis).

The functions of vocal matching have been clarified in territorial songbirds, compositionally stable groups of birds and mammals, and species with multiple alarm or assembly signals. The functions of vocal matching are less well understood in fission/fusion species that are non-territorial, live in groups with variable composition, and lack multiple alarm signals. Here we present the results of interactive playbacks in a fission/fusion parrot species, the orange-fronted conjure (Aratinga canicularis), that provide evidence of vocal matching.

Hearing and vocalizations in the orange-fronted conure (Aratinga canicularis).

The auditory sensitivities of the orange-fronted conure (Aratinga canicularis) were examined in relation to the spectral characteristics of its vocalizations. Absolute thresholds, masked thresholds, frequency difference limens, and intensity difference limens for pure tones were obtained using psychoacoustic techniques. In general, hearing abilities are similar to those found in many avian auditory generalists.