Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by their foraging niche adaptations. In each species these have evolved through natural selection over extended periods of geologic time as a reflection of available food resources, the presence of competing species, and the limitations on innate variations in anatomy, physiology, and behavior imposed by available genetic mutations and recombinations. To a very considerable degree the auks, loons, and grebes seem to have adjusted to the effects of interspecific competition by evolving differences in bill shape and body size that sometimes open specific new foraging niche opportunities to them and thus reduce direct competition with other species of ...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
As used here, egocentric behavior means those categories of individual survival and maintenance be...
As used here, egocentric behavior means those categories of individual survival and maintenance be...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
As used here, egocentric behavior means those categories of individual survival and maintenance be...
As used here, egocentric behavior means those categories of individual survival and maintenance be...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Auks, loons, and grebes are birds whose anatomies and behaviors have been sharply influenced by thei...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
Loons, grebes, and auks comprise a rather large number of species of aquatic diving birds that are f...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
The geographic distributions of the loons, auks, and grebes are primarily reflections of the evoluti...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
Loons are large diving birds having long, straight, and acutely pointed bills, with feathers coverin...
As used here, egocentric behavior means those categories of individual survival and maintenance be...
As used here, egocentric behavior means those categories of individual survival and maintenance be...