Lumpy chipmunks

Article Abstract:

Swellings on the bodies of chipmunks are often caused by a host specific botfly, Cuterebra emasculator. The larva of the fly burrows into the chipmunk's skin where it remains for ten weeks. It then overwinters as a pupa in the ground before emerging as an adult in the spring.

Diseases, Parasites, Chipmunks, Botflies

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Hummingbirds in the shower

Article Abstract:

Hummingbirds appear to prefer showers over baths, as they have been observed flying through water spray from hoses. Their southward migration is thought to be triggered by changes in day length rather than the availability of food in gardens.

Birds, Bird migration, Hummingbirds

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The singing sex: do only male birds sing?

Article Abstract:

Birds sing for many different reasons but mainly to attract mates and to signify their territory. Although most male birds sing, a minority do not. A minority of female birds sing but most just produce a variety of calls.

Analysis, Mate selection, Birdsongs, Territoriality (Zoology), Animal territoriality

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