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Video of a male robin singing American robin song (with a Black-capped Chickadee in background) The American robin (Turdus migratorius) is a migratory bird of the true thrush genus and Turdidae, the wider thrush family.
Sequential polyandry refers to the mating strategy females use in certain situations. First, they will mate with one male and raise the offspring for a short period of time. Then they will mate with another male and care for that clutch resulting in more genetic diversity and quantity of the offspring per season.
The energy expenditure of chasing and fighting during the breeding season can result in a buck losing an immense amount of weight, with some research documenting losses of as much as 20% of body weight with some sources showing body mass losses of up to 30%. [11] On average, a buck before breeding season can weigh up to 180 pounds (82 kg).
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The Japanese robin, along with the Ryukyu robin, can be traced back to 1835 when they were placed into one of the Coenraad Jacob Temminck's works under the name Erithacus akahige. After the 2006 molecular phylogenetic study, the species was placed into a clade under Larvivora , meaning "caterpillar eater," giving it half of its current ...
Super/Man shows how close the Williams family was with the Reeves in the years after the accident. Williams and Marsha Garces Williams, his wife from 1989-2010, would host a big party at their ...
The losers of fights have an increased stress rate and fewer breeding opportunities [9] while fighting among males, which only happens during the breeding season illustrates to a female that he would be able to provide protection for her and her eggs. [9] Some weapons used are spikes on the body and tail, teeth, and claws. [10]
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