"Male (cock) robins [i]Erithacus rubecula[/i] are approachable in spring, when their minds are occupied with full-throated warnings to other nearby male robins. One spring, a survey found that a large garden could be mapped as having seven separate robin t"
Price: 10
"Canada geese [i]Branta canadensis[/i] pair in late winter / early spring. At this time, couples frequently indulge in noisy conflicts with other couples. Here, one male has decided that the male from another couple really does not belong on the same pond."
Price: 10