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Property Organism Value Units ID Details
Number of receptors and ganglion cells per visual degree (pvd) American kestrel Falco sparverius receptors pvd in the central fovea 8300: receptors pvd in the temporal fovea 7700: ganglion cells pvd in the central fovea 3000: ganglion cells pvd in the temporal fovea 700 receptors or ganglion cells/visual degree 117192 Bringmann A. Structure...
Speed of fastest animal (peregrine falcon, Falco peregrinus in stoop) Metazoa animals >320 km/hour 112867 Ponitz B, Schmitz A,...
Net population change in North American birds Biosphere Table - link % change since 1970 117281 Rosenberg KV et al.,...
Time of radiation across the North American continent from a European ancestor Butterfly Limenitis spp. during the past 3 - 4 million years 117176 Frentiu FD, Briscoe AD....
Net change in abundance across North American bird families, 1970-2017 Biosphere Table - link N/A 117283 Rosenberg KV et al.,...
Gains and losses across the North American avifauna over the last half century Biosphere Table - link N/A 117280 Rosenberg KV et al.,...
Net change in abundance across the North American avifauna, 1970-2017 Biosphere Table - link N/A 117282 Rosenberg KV et al.,...
Axon diameter in the optic nerve North American opossum Didelphis virginiana myelinated 0.3-6.7µm (mean 1.6µm): unmyelinated 0.2-1.6µm (mean 0.6µm) µm 112118 Kirby MA, Clift-Forsberg L...
Degree by which the effect of Dermorphin, a novel opioid heptapeptide produced in skin, is greater than morphine at same dosage level South American leaf frog Phyllomedusa spp. 1000 fold greater than morphine 113177 Clarke BT. The natural...
Speed of snapping - one of fastest movements in plant kingdom Plant Venus flytrap Dionaea muscipula 100 msec 106630 Forterre Y, Skotheim JM...
A description of the “Standard Man” Human Homo sapiens Table - link N/A 109707 Irving PH. 2007. The...
Structural proteins in bacteriophage N4 Bacteriophage N4 Table - link N/A 112414 Choi KH et al., Insight...
Fraction of USA population with diabetes mellitus Human Homo sapiens 7.8 % 106171 van Belle TL, Coppieters KT...
Decrease in bird population size in North America since 1970 Biosphere 29 % 117279 Rosenberg KV et al.,...
Distribution of systemic blood flow to the various organs and tissues of the body at rest Human Homo sapiens Table - link N/A 109465 Vander, A., J. Sherman...
Specific density of tuber Potato Solanum tuberosum 1.06 Unitless 103205 D. R. Isleib, Density...
Shape of the foveal pit and maximal visual acuity (spatial resolving power) of various bird species Birds Table - link N/A 117191 Bringmann A. Structure...
US 2005 mean animal-based food energy production Human Homo sapiens 4400 kJ/person/day 104636 Gidon Eshel and Pamela Martin...
Number of times obligate interspecific brood parasitism arose independently during evolution Birds 7 times 117277 Stevens M. Bird brood...
Density of starch granules Potato Solanum tuberosum 1.55 g/ml 103206 D. R. Isleib, Density...