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A paper on the species asks the important question “Does nest sanitation elicit egg rejection in an open-cup nesting cuckoo host rejecter?” ” To rephrase: if you put some trash into a nest of a bird along with a cuckoo egg, does that improve the chance that the cuckoo egg will be kicked out? How to find out?
For one thing, we become more aware of cultural biases in our science (new findings on warbling female birds, for example, reveal both gender and geographic biases). Many popular science books have neither. As Ackerman explains in her Introduction, studying extreme behavior brings new insight into what we think we know.
According to the HBW, when breeding, male birds do most of the incubation and parenting while females often leave the nest up to one week before the eggs hatch. According to Couzens, after laying the eggs, females sometimes immediately abandon their first mate and pair up with another male. But maybe that is actually a good thing.
Alternatively, imagine I set the dial to produce simple heat, like the kind that comes out of your stove to cook your scrambled eggs. The kind of energy produced by a cell phone signal is way more like the heat that cooks your eggs than like the scary radiation that comes form an H-bomb or X-ray machine or whatever. 0016862 a.
Of course, it is hard to resist looking at a paper titled “Host personality predicts cuckoo egg rejection in Daurian redstarts” Basically, the personality of a female redstart (bold or shy) predicts the responses to parasitic eggs – bold hosts are more likely to reject parasitic eggs.
Jennifer Ackerman points out in the introduction to What the Owl Knows: The New Science of the World’s Most Enigmatic Birds , that we don’t know much, but that very soon we may know a lot more. What the Owl Knows: The New Science of the World’s Most Enigmatic Birds is a joyous, fascinating read.
During March, 11 beats shared 122 checklists to accumulate 680 species from 8 countries; USA, Costa Rica, Serbia, India, Australia, New Zealand, UK and Japan. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail. Mark Hatfield Marine Science Center and Estuary Trail.
Acariformes: Syringophilidae) from the Chestnut-eared Bunting (Passeriformes: Emberizidae) in Japan (morphology and DNA barcode data)” Ah, to be a scientist. Fortunately for the buntings, they seem to detect most cuckoo eggs smuggled in (75% in one study). Maybe there is some justice in this world after all.
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