BIRDS OF COSTA RICA

PHOTO LIBRARY

Clay-colored Robin / Mirlo Pardo (Turdus grayi)

 

QUICK TIPS:

1) Examine the wing - on AHY/ASY birds it should be uniformly brown, while on HY/SY birds there is typically a moult limit among the greater coverts, with the outer coverts retaining buffy tips.

2) Examine the tail - on AHY/ASY birds the rectrices are relatively broad and rounded, while on HY/SY birds they are relatively narrow and tapered at the tip.

Species account updated March 2009

Ageing and sexing overview:

Spring:

ASY - U
Wing uniformly brown, lacking moult limits; rectrices relatively broad and rounded; sexes identical

SY - U
Moult limit among the greater coverts with buffy tipson outer greater coverts; rectrices relatively narrow and tapered; sexes identical
 
 
 

Ageing and sexing details:

SPRING:  ASY-U (after-second-year, sex unknown)

Overall body plumage usually provides few clues to age, and both sexes appear identical.


Photo by Marcel Gahbauer, Las Caletas (CR), April 2008


The two wings below each appear uniform in colour, although somewhat different from each other (reflecting differences in lighting and/or possibly some regional variation in appearance).


Photo by Marcel Gahbauer, Las Caletas (CR), April 2008


Photo by Peter Pyle, El Salvador, February 2006


The rectrices are relatively broad and rounded, consistent with an after-second-year robin.


Photo by Marcel Gahbauer, Las Caletas (CR), April 2008

RETURN TO AGE/SEX OVERVIEW

 

SPRING:  SY-U (second-year, sex unknown)

 






RETURN TO AGE/SEX OVERVIEW

2002- The Migration Research Foundation Inc.