Chile : 100 years of the Publication of Chile's fauna and flora by Claudio Gay 1.01

The first issue consists of 25 stamps of 60 centavos.
On each full sheet, a similar stamp is repeated 4 times.

The stamp below can be found on position 15, 30, 65 and 70.

error position 15 and 30

Two of the positions i.e. 15 and 30 have a small error. The error does not occur on position 65 or 70.

On position 15 and 30 the frame below the Cts is broken (there's a colour spot in the frame).

The bird depicted is the Caracara Vulgaris or the Crested Caracara. 

By Andreas Trepte - Own work, CC BY-SA 4.0,
https://commons.wikimedia.org/w/index.php?curid=43914003

This bird of prey is quite common in central and south America, and was already described by the pre-Columbian Aztec population.
Moreover it is still the bird depicted in the coat of arms of Mexico.

Coat of Arms - Mexico

 

to be continued...