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In the northern hemisphere, birds migrate towards the north during spring (increasing photoperiod) and towards the south during autumn (decreasing photo period). It also controls the migration of fishes like eels and salmo..

The structure and the number of rod shaped and cone shaped cells are different for animals and birds. For e.g., bees have cones sensitive to ultraviolet ray..

The structure and the number of rod shaped and cone shaped cells are different for animals and birds. For e.g., bees have cones sensitive to ultraviolet rays. The retina of chicken has mostly cone shaped cells and only a few rods. It is because of this reason that a chicken can see only i..

Tom has some birds at his home. Which tally shows the correct number of birds Tom has? => Figure 2 or Figure 1 or Figure 1 and Figure 2 or None of the above..

Identify the group that has more birds. => Group C or Group A or Group B or Group C & Group A..

Four birds sitting in a tree and five birds in another tree. Find the total number of birds. => 8 or 10 or 9 or 6..

20 birds are sitting on a tree with 5 branches. Equal number of birds are sitting on each branch. Which number sentence shows the number of birds on each branch of the tree? => 20 ÷ 10 = 2 or 20 ÷ 5 = 4 or 20 ÷ 20 = 1 or 20 ÷ 4 = 5..

There were 9 birds in a tree. 4 of them flew away. How many birds are in the tree now? => 3 or 5 or 6 or 4..

The number of birds visited the TwinCoast Bird Sanctuary in United States for the last Spring season is represented in the line plot shown. Which of the following birds visited the Sanctuary median number of times? => Mallard or Osprey or Veery or Willet..