are brood parasites; they lay their eggs in the nests of other birds. Their involvement doesn't necessariy end with egg-laying, however. Brown-heaed Cowbirds have been observed "farming" their hosts and engaging in retaliation when their eggs are destroyed or the host nest is abandoned. These tactics lead some to call the Brown-headed Cowbird the "Mobster Bird." You can totally customize this gift! Move the design around, change the color or style, add your own text or images -- make it your own!