A novel laboratory paradigm for studying food-caching behavior in black-capped chickadees and contributions of memory to this behavior.

Three-dimensional digital reconstruction shows the temporal and palatal regions of stemward avialans are evolutionarily and functionally conservative, and the mixture of plesiomorphic cranial morphologies together with derived postcranial skeleton manifests the key role of mosaicism in early bird diversification.

Fruit consumption of Jeholornis was evidenced and indicates seed dispersal was present from early in avian radiation.

When landing, Pacific parrotlets exhibit stereotyped leg and wing dynamics regardless of perch diameter and texture, but foot and claw kinematics become surface-specific upon touchdown to successfully grasp the perch.

Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.

Birds that see ultraviolet light tune the sensitivity of their short-wavelength photoreceptors with colored filters to maximize the number of colors they can see.

Genomic landmarks, known generically as ‘CpG islands’, program chromatin structure via their richness in the dinucleotide CG and their skewed composition of DNA bases.

Bird activity during Covid 19 lockdown changed depending on species and site, as well as on environmental parameters and heterospecific (e.g., human) activity, revealing a complex and dynamic urban ecological system.

Two myosin 15 isoforms are required separately for the development and long-term maintenance of hearing.

Structure-function analysis of the super elongation complex formed when HIV replicates inside cells reveals that the HIV-1 Tat protein binds to a cleft between P-TEFb, an enzyme that is involved in normal transcription, and AFF4, a protein that is used to build the super elongation complex