English name :  Evening Grosbeak 
         French name : Gros-bec errant
         Latin name :  Hesperiphona vespertina
         Breadth :  36 cm
         Length :    20 cm
         Weight :    60 g

Rather roundish bird the size of a robin with a big pale beak. The male is yellow, the top of it’s body is darker. Forhead and brow yellow. The wings and the tail are black , the wings also have large white patches. The female is of a dark shade of grey and beige with  tints of yellow, especially at the back of the head. The male has more white spread out on the wings.Tail marked with white. Beak pale yellow. Group cries at birdfeeders. Undulated flight.
Bird Feeder for the Evening Grosbeak 

HABITAT
Coniferous and mixed forests, sometimes in cities or towns.

NESTING 
The Evening Grosbeak nests in mainly in conifers and occasionally a broad-leaved trees, between 6.1 and 18 m from the ground. The female constructs the nest in a loose fashion without much consistency that is made entirely of twigs and sometimes lichen that is decorated with rootlets and on occasion hair. The nest takes on an elliptical form.
Exterior diameter :  11 x 14.9 cm  Height :  13 cm
Interior diameter :  8.1 x 9.4 cm  Depth :   7.1 cm

Environment Canada 
 

Eggs, three (3) or four (4), appr. 24 x 17 mm, and oval. The shell is smooth and slightly glossy, light blue, blue-green marked with flecks of brown, gray, and purple. The eggs are laid in one (1) day intervals. Incubation, assured by the female, is towards the end of June and lasts between 12 and 14 days. During this time, the male brings food to the female. The chicks are born altricial (nude, eyes closed, immobile) and are nourished with regurgitated insects that the parents bring to the nest. The eyes open approximately 4 to 6 days after birth, occasionally later; 13 or 14 days after hatching, the young leave the nest. There is one brood per year.

Royal Alberta Museum : Eggs of Alberta  
 
FOOD
Often, we notice a solitary female seeking adequate feeding locations and returns the next day with a flock. Seeds from the sunflower plant, maple, elderberry, and ash trees, fruit like wild cherries and fruit from the rowan and sumac trees, and sometimes insects.

Your charter of the preferred food of your birds

 
MIGRATION
They roam widely and randomly in search of food.

Cornell Ornithology Lab   

Websites for additional information:

Canada : Environment Canada 
 

United States : Cornell Lab of Ornithology  
 
 
The Museum of Civilization : Audubon, Paint, Nature and Adventure 
 

Definition:  altricial

Consult the glossary of the Canadian Wildlife and Flora Service
 
Ornithology page of the Evening Grosbeak