But it is his passion for birds that has come to define his particular method of wildlife-friendly farming and has led to an MBE and multiple awards, most recently Countryside Farmer of the Year in the Farmers' Weekly Awards.
If you want to present reptiles in their modern biological context (which includes birds!), it is best to define them in a phylogenetic context and then look at how these traits evolved within the clade.
Thus, migratory connectivity studies of birds can be used to define important migratory pathways and identify the population of origin of individuals at all stages of the annual cycle (Webster et al. 2002).
"Mockingbirds use songs just like other birds, either to attract mates or to define territories, telling other birds to keep out, and it is likely that mimicking has something to do with these two things," he said.
This previous work, together with the results in the present study, suggest the need for studies involving larger bird populations in order to define the threshold load above which morphological indices may decrease.
Features of Archaeopteryx are used to define what a bird is, so species that lived beforehand are in murky territory.
The methods presented here may also provide some of the metrics needed to define criteria for bird flu mitigation.
We used the same 6.4% area threshold to define richness centers for birds, mammals, and amphibians (i.e., the richest 6.4% of all grid cells for these groups were selected).
To define the role of birds as reservoirs and disseminators of Borrelia spirochetes, we characterized tick infestation and reservoir competence of migratory passerine birds in Sweden.
First, DNA samples from birds that were homozygous for MHC- B were used to define individual SNP-based patterns (haplotypes).
