Similar experiments using birds from southern Germany and eastern Austria, on opposite sides of the migratory divide, demonstrated that the direction of migration is also genetically determined.
I will use birds from a gamekeeper who is shooting them in his job, as they would otherwise go to waste and I hate waste.
We used birds from two generations with each generation producing two hatches.
The oocyst dose and decision to inoculate with single Eimeria species was based on a preliminary study using birds at similar ages from the same genetic backgrounds.
The sequence obtained using bird primers, although undoubtedly from a bird species (see Text S1 and Table S1) was too distant (62/69 bp identity) to any sequence in GenBank to allow species identification.
The decision to use birds prompted Newcomer to deviate from the then standard eight-direction joystick.
We used bird tissue samples from the collections in UMMZ Universityy of Michigan-Museum of Zoology), CUMV (Cornell University-Museum of Vertebrates) and MVZ (The Museum of Vertebrate Zoology at Berkeley).
He noted that investigators had recently used bird specimens from its National Museum of Natural History to help pinpoint sources of the devastating 1918 influenza pandemic.
We use bird count data from a survey conducted at over 600 sites in 3725 km2 agricultural landscapes in southern Sweden to investigate the importance of farmsteads as potential sources of biodiversity in simplified landscapes.
The team tabulated olfactory ratios for 20 species of dinosaurs, seven species of extinct birds, and 130 species of living birds, using data from the published literature as well as performing new computed tomography scans of dinosaur and bird fossil skulls and the skulls of modern birds.
