87 Fifty thousand years of Arctic vegetation and megafaunal diet.
http://www.nature.com/nature/journal/v506/n7486/full/nature12921.html
86 Position and flap phasing between birds in formation flight indicate aerodynamic benefit.
http://www.nature.com/nature/journal/v505/n7483/full/nature12939.html
85 The Lion in West Africa Is Critically Endangered.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0083500;jsessionid=B3B83250035957E64122118873BDAD0D
84 Earliest evidence for commensal processes of cat domestication.
http://www.pnas.org/content/111/1/116.abstract
83 Cultural assemblages show nested structure in humans and chimpanzees but not orangutans.
http://www.pnas.org/content/111/1/111.abstract
82 Symbiotic bacteria appear to mediate hyena social odors.
http://www.pnas.org/content/110/49/19832.abstract
81 Morphology of seahorse head hydrodynamically aids in capture of evasive prey.
http://www.nature.com/ncomms/2013/131126/ncomms3840/full/ncomms3840.html
80 Bacterial farming by the fungus Morchella crassipes.
http://rspb.royalsocietypublishing.org/content/280/1773/20132242.abstract
79 The Trojan female technique: a novel, effective and humane approach for pest population control.
http://rspb.royalsocietypublishing.org/content/280/1773/20132549.abstract
78 Brood parasites lay eggs matching the appearance of host clutches.
http://rspb.royalsocietypublishing.org/content/281/1774/20132665.abstract
77 Plastid-bearing sea slugs fix CO2 in the light but do not require photosynthesis to survive.
http://rspb.royalsocietypublishing.org/content/281/1774/20132493
76 Circadian rhythms in Mexican blind cavefish Astyanax mexicanus in the lab and in the field.
http://www.nature.com/ncomms/2013/131114/ncomms3769/full/ncomms3769.html
75 Sperm competition drives the evolution of suicidal reproduction in mammals.
http://www.pnas.org/content/110/44/17910.abstract
74 Grasshopper mice use the scorpion’s strength against it—instead of inducing pain, scorpion venom blocks pain.
http://www.sciencemag.org/content/342/6157/441.abstract
73 The global spread of a fungal disease of frogs may be explained by its ability to inhibit immune clearance.
http://www.sciencemag.org/content/342/6156/366.abstract
72 First evidence of a 200-day non-stop flight in a bird.
http://www.nature.com/ncomms/2013/131008/ncomms3554/full/ncomms3554.html
71 Repeated targeting of the same hosts by a brood parasite compromises host egg rejection.
http://www.nature.com/ncomms/2013/130924/ncomms3475/full/ncomms3475.html
70 Unmanned Aerial Survey of Elephants.
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0054700
69 How minute sooglossid frogs hear without a middle ear.
http://www.pnas.org/content/110/38/15360.abstract
68 Social amoeba farmers carry defensive symbionts to protect and privatize their crops.
http://www.nature.com/ncomms/2013/130913/ncomms3385/full/ncomms3385.html
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