Good on you for wanting to make the switch to vegan!
Sadly the fact is that hens in all egg laying systems (battery and free-range) are killed when their egg production slows down. That's usually at about 18 months old, of a natural lifespan of about 12 years. They are slaughtered just like those chickens killed for meat
But that's not the worst of it. Obviously the egg industry needs to 'replace' these hens, so consequently millions more birds are hatched -- but only half of them are female. Since the males can't lay eggs, they are "useless" to the egg industry, and won't grow big enough or fast enough to be killed for meat. As a result, 10 MILLION unwanted day-old male chicks are gassed to death or ground up alive (yep) by the Australian egg industry every year. This is the rather disturbing 'waste product' of the egg industry, and seriously, makes me want to cry every time I think about it
Here's a video shot inside the world's largest egg-laying hen hatchery:
www.unleashed.org.au/take_action/egg-industry-secret
I wish I'd have known about this years before I stopped eating eggs. More people need to know about it!
Fortunately there are heaps of egg-free recipes, and even egg-replacers that you can use in baking etc. So, there's little reason to miss chicken eggs!
Check out this page for some delicious egg-free recipes
www.unleashed.org.au/change_the_world/go_veg/vegan_recipes.php