Tree Sparrow

ring with A and 2 plain rings


Tijs van den Berg
ring area The Netherlands, near Utrecht
animals 100
observations 116, of which 104 are captures
ringed in 2016 to 2020

Tree Sparrows are getting quite rare around Haarzuilens. The species is declining fast. VRS de Haar hopes to get more insight in trends in survival and dispersion of this species in our research area.

The position of the metal ring is important for the identification of an individual.

Example bird

Shorthand: GC/MNW(A) explanation
This is an arbitrary example of a bird that might not exist.

Data entry