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Fauna reproduction dates

With regard to fauna, the Phenoclim programme is interested in the reproduction dates of two animal species: the common frog and the coal tit.

Grenouille rousse en route vers sa mare de reproduction - © CREA Mont-Blanc

The common frog

Particularly threatened by the disappearance of their habitats and by human pressure, amphibians are at the heart of a major conservation challenge aimed at preventing their extinction. CREA already monitors ponds where common frogs dwell and tracks egg-laying dates and the growth stages of tadpoles.

Phenoclim volunteers are invited to participate in research by observing the egg-laying of common frogs in ponds or water holes close to where they live. Each week beginning in the month of March (or later depending on the altitude), volunteer observers must visit their ponds and provide information about the number of egg-layings observed.

Refer to the complete protocol

The coal tit

CREA studies the coal tits that have settled in the hundreds of nest boxes provided to birds at different altitudes (1,300 m – 1,900 m) in the Vallorcine forest (74). Researchers monitor, for each brood, the egg-laying date, the weight and the development of the coal tit chicks.

Within the framework of Phenoclim, CREA suggests to volunteers, private individuals or groups that benefit from a large wooded space, to set up ten or so nest boxes to study the egg-laying dates of the coal tits at various altitudes. Once a week between March and June, volunteers must verify the number of eggs in the nests by complying with a certain number of precautions in order to determine the date that the first egg is laid without disturbing the birds.

For this specific protocol, it is imperative that you contact CREA beforehand for the set-up of the project. Contact CREA

Refer to the complete protocol 

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Protected species

Several amphibians benefit from a protection status in particular that prohibits their capture. Observations carried out within the framework of Phenoclim do not require any collecting of eggs or tadpoles.