Reserva Ecológica Costanera Sur

© Cora Rimoldi

I thank Gustavo, the author of the photo, for sharing this finding. It was taken during a visit of the Coa La Plata (Observers’ Club) to Costanera Sur in july 2012. This is the third photographic record of this bird so far: one in 2007 and two in 2012 (See other records) . All the photos are of male individuals.
This is not the natural habitat of the Black-backed Grosbeak. Its distribution range covers a vertical stripe from the yungas up north to the Province of San Luis. CR

I draw the attention to some of them. Psittacids (parrots) have ousted Picids (woodpeckers) from the last position within Non Passeriformes. Many embericids have joined the Thraupids to the extent that there are only two bird species left (Rufous-collared Sparrow and Yellow-striped Brush-Finch). A new family Tityridae has been created.
I want to make clear that Saltators still remain within the Family Cardinalidae though they have been removed from it. SACC has provisionally placed them within the group Insertae Sedis (of uncertain placement) till their new relocation is defined.

The White-winged Becard has never fit to the letter within a family. First it was included in the Cotingidae Family. Then it was moved to the Tyrannid Family since the morphology of the syrinx (vocal organ) was much more similar to that of tyrannids’. Even then this did not satisfy taxonomists. Recent morphological and genetic studies have shown a common thread for this and almost other 30 bird species which were in the same situation. All of them have been grouped in a new family: Tityridae.
Only eight of the 30 bird species are represented in Argentina. and only three of them have photographic record on this site. They are:
White-winged Becard Pachyramphus polychopterus frequent summer visitor and breeder, illustrated in the photo by a male
Green-backed Becard Pachyramphus viridis with the only record of a female in 2010 and
White-naped Xenopsaris Xenopsaris albinucha with a breeding record in 2000.
CR

Dolores tells us that “I remembered that I had seen a juvenile in the Middle Path in December. These are the photos I took on 30th of December. I did not send it since I did not consider it of any interest but that of staying long finding the best position to take a shot of the juvenile when it was bed. But I only managed to photograph the juvenile with the fruit already in the mouth and the adult is not seen. ”
© Dolores Fernández