Assessing microplastic and nanoplastic contamination in bird lungs: evidence of ecological risks and bioindicator potential.

Microplastics (MPs, 1 µm-5 mm) and nanoplastics (NPs, < 1 µm), collectively termed micro(nano)plastics (MNPs), are pervasive airborne pollutants with significant ecological risks. Birds, recognized as bioindicators, are particularly vulnerable to MNP exposure, yet the extent and risks of MNP pollution in bird lungs remain largely unexplored. This study assessed MP exposure in bird lungs of 51 species and NP exposure in the lungs of five representative species using laser direct infrared (LDIR) and pyrolysis gas chromatography-mass spectrometry (Py-GC-MS) techniques, respectively.

The diet-intestinal microbiota dynamics and adaptation in an elevational migration bird, the Himalayan bluetail ().

Migratory birds experience changes in their environment and diet during seasonal migrations, thus requiring interactions between diet and gut microbes. Understanding the co-evolution of the host and gut microbiota is critical for elucidating the rapid adaptations of avian gut microbiota. However, dynamics of gut microbial adaptations concerning elevational migratory behavior, which is prevalent but understudied in montane birds remain poorly understood.

The complete mitochondrial genome of Lesser Sand-Plover and its phylogenetic position.

The Lesser Sand-Plover () is a small shorebird in Charadriiformes. Here we assembled the complete mitochondrial genome of (Aves: Charadriiformes) which is 16,919 bp in length and consisting of 13 protein-coding (PCGs), 2 ribosomal RNA, 22 transfer RNA and 1 control region. The overall A + T content of was 55.

Complete mitochondrial genome and the phylogenetic position of (Passeriformes Fringillidae).

The complete mitochondrial genome of was sequenced in this study and the total length is 16,806 bp containing 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs), and one control region. The phylogenetic analysis based on 13 PCGs of five grosbeaks and other Fringillidae birds demonstrated that , , and had close phylogenetic relationships for clustering as three sister branches, and supported that originated earlier in phylogeny.

The complete mitochondrial genome and the phylogenetic position of (Aves: Passeriformes).

The Oriental Skylark () is a small songbird in the Alaudidae. Here we assembled the complete mitochondrial genome of which is 17,055 bp in length and consisting of 13 protein-coding genes (PCGs), 2 ribosomal RNA, 22 transfer RNA, and 2 extensive heteroplasmic control regions. The overall A + T content of the mitogenome is 52.